def registerCallback(self, eventType, callback, eventId, *args):
if hasattr(callback, 'im_self'):
target = callback.im_self
elif hasattr(callback, 'func_name'):
target = None
else:
raise ValueError('invalid callback: %s' % callback)
if len(args) > 0:
arguments = (None, ) + args # assume event always passed first
eventArgIdx = 0
else:
arguments = None
eventArgIdx = None
if self._eventRouter is None:
self._eventRouter = EventRouter()
if self._eventIdentifiers is None:
self._eventIdentifiers = set()
if eventId is not None:
needRepaint = not self._eventRouter.hasListeners(eventType)
self._eventRouter.addListener(eventType, target, callback, arguments,
eventArgIdx)
if (eventId is not None) and needRepaint:
self._eventIdentifiers.add(eventId)
self.requestRepaint()
def registerListener(self, *args):
"""Registers a new listener with the specified activation method to
listen events generated by this component. If the activation method
does not have any arguments the event object will not be passed to
it when it's called.
This method additionally informs the event-api to route events with
the given eventIdentifier to the components handleEvent function
call.
For more information on the inheritable event mechanism see the
L{muntjac.event package documentation<muntjac.event>}.
@param args: tuple of the form
- (eventIdentifier, eventType, target, method)
1. the identifier of the event to listen for
2. the type of the listened event. Events of this type or
its subclasses activate the listener.
3. the object instance who owns the activation method.
4. the activation method.
- (eventType, target, method)
1. the type of the listened event. Events of this type or
its subclasses activate the listener.
2. the object instance who owns the activation method.
3. the activation method or the name of the activation method.
"""
nargs = len(args)
if nargs == 3:
eventType, target, method = args
if self._eventRouter is None:
self._eventRouter = EventRouter()
self._eventRouter.addListener(eventType, target, method)
elif nargs == 4:
eventIdentifier, eventType, target, method = args
if self._eventRouter is None:
self._eventRouter = EventRouter()
if self._eventIdentifiers is None:
self._eventIdentifiers = set()
needRepaint = not self._eventRouter.hasListeners(eventType)
self._eventRouter.addListener(eventType, target, method)
if needRepaint:
self._eventIdentifiers.add(eventIdentifier)
self.requestRepaint()
else:
raise ValueError, 'invalid number of arguments'
def registerListener(self, *args):
"""Registers a new listener with the specified activation method to
listen events generated by this component. If the activation method
does not have any arguments the event object will not be passed to
it when it's called.
This method additionally informs the event-api to route events with
the given eventIdentifier to the components handleEvent function
call.
For more information on the inheritable event mechanism see the
L{muntjac.event package documentation<muntjac.event>}.
@param args: tuple of the form
- (eventIdentifier, eventType, target, method)
1. the identifier of the event to listen for
2. the type of the listened event. Events of this type or
its subclasses activate the listener.
3. the object instance who owns the activation method.
4. the activation method.
- (eventType, target, method)
1. the type of the listened event. Events of this type or
its subclasses activate the listener.
2. the object instance who owns the activation method.
3. the activation method or the name of the activation method.
"""
nargs = len(args)
if nargs == 3:
eventType, target, method = args
if self._eventRouter is None:
self._eventRouter = EventRouter()
self._eventRouter.addListener(eventType, target, method)
elif nargs == 4:
eventIdentifier, eventType, target, method = args
if self._eventRouter is None:
self._eventRouter = EventRouter()
if self._eventIdentifiers is None:
self._eventIdentifiers = set()
needRepaint = not self._eventRouter.hasListeners(eventType)
self._eventRouter.addListener(eventType, target, method)
if needRepaint:
self._eventIdentifiers.add(eventIdentifier)
self.requestRepaint()
else:
raise ValueError, 'invalid number of arguments'
def registerCallback(self, eventType, callback, eventId, *args):
if hasattr(callback, 'im_self'):
target = callback.im_self
elif hasattr(callback, 'func_name'):
target = None
else:
raise ValueError('invalid callback: %s' % callback)
if len(args) > 0:
arguments = (None,) + args # assume event always passed first
eventArgIdx = 0
else:
arguments = None
eventArgIdx = None
if self._eventRouter is None:
self._eventRouter = EventRouter()
if self._eventIdentifiers is None:
self._eventIdentifiers = set()
if eventId is not None:
needRepaint = not self._eventRouter.hasListeners(eventType)
self._eventRouter.addListener(eventType, target, callback,
arguments, eventArgIdx)
if (eventId is not None) and needRepaint:
self._eventIdentifiers.add(eventId)
self.requestRepaint()
class AbstractComponent(IComponent, IMethodEventSource):
"""An abstract class that defines default implementation for the
L{IComponent} interface. Basic UI components that are not derived
from an external component can inherit this class to easily qualify as
Muntjac components. Most components in Muntjac do just that.
@author: IT Mill Ltd.
@author: Richard Lincoln
@version: @VERSION@
"""
SIZE_PATTERN = '^(-?\\d+(\\.\\d+)?)(%|px|em|ex|in|cm|mm|pt|pc)?$'
def __init__(self):
"""Constructs a new IComponent."""
super(AbstractComponent, self).__init__()
#: Style names.
self._styles = None
#: Caption text.
self._caption = None
#: Application specific data object. The component does not use
# or modify this.
self._applicationData = None
#: Icon to be shown together with caption.
self._icon = None
#: Is the component enabled (its normal usage is allowed).
self._enabled = True
#: Is the component visible (it is rendered).
self._visible = True
#: Is the component read-only ?
self._readOnly = False
#: Description of the usage (XML).
self._description = None
#: The container this component resides in.
self._parent = None
#: The EventRouter used for the event model.
self._eventRouter = None
#: A set of event identifiers with registered listeners.
self._eventIdentifiers = None
#: The internal error message of the component.
self._componentError = None
#: Immediate mode: if true, all variable changes are required
# to be sent from the terminal immediately.
self._immediate = False
#: Locale of this component.
self._locale = None
#: The component should receive focus (if L{IFocusable})
# when attached.
self._delayedFocus = None
#: List of repaint request listeners or null if not listened at all.
self._repaintRequestListeners = None
#: Are all the repaint listeners notified about recent changes ?
self._repaintRequestListenersNotified = False
self._testingId = None
# Sizeable fields
self._width = self.SIZE_UNDEFINED
self._height = self.SIZE_UNDEFINED
self._widthUnit = self.UNITS_PIXELS
self._heightUnit = self.UNITS_PIXELS
self._sizePattern = re.compile(self.SIZE_PATTERN)
self.errorHandler = None
#ComponentSizeValidator.setCreationLocation(this);
def __getstate__(self):
result = self.__dict__.copy()
del result['_sizePattern']
return result
def __setstate__(self, d):
self.__dict__ = d
self._sizePattern = re.compile(self.SIZE_PATTERN)
def getTag(self):
"""Gets the UIDL tag corresponding to the component.
Note! In version 6.2 the method for mapping server side components
to their client side counterparts was enhanced. This method was made
final to intentionally "break" code where it is needed. If your code
does not compile due overriding this method, it is very likely that
you need to:
- remove the implementation of getTag
- add L{ClientWidget} annotation to your component
@return: the component's UIDL tag as C{String}
@deprecated: tags are no more required for components. Instead of tags
we are now using L{ClientWidget} annotations to map
server side components to client side counterparts.
Generating identifier for component type is delegated to
terminal.
@see: L{ClientWidget}
"""
warn('tags are no more required for components', DeprecationWarning)
return ''
def setDebugId(self, idd):
self._testingId = idd
def getDebugId(self):
return self._testingId
def getStyle(self):
"""Gets style for component. Multiple styles are joined with spaces.
@return: the component's styleValue of property style.
@deprecated: Use getStyleName() instead; renamed for consistency and
to indicate that "style" should not be used to switch
client side implementation, only to style the component.
"""
warn('Use getStyleName() instead', DeprecationWarning)
return self.getStyleName()
def setStyle(self, style):
"""Sets and replaces all previous style names of the component. This
method will trigger a L{RepaintRequestEvent}.
@param style:
the new style of the component.
@deprecated: Use setStyleName() instead; renamed for consistency and
to indicate that "style" should not be used to switch
client side implementation, only to style the component.
"""
warn('Use setStyleName() instead', DeprecationWarning)
self.setStyleName(style)
def getStyleName(self):
# Gets the component's style.
s = ''
if self._styles is not None:
s = ' '.join(self._styles)
return s
def setStyleName(self, style):
# Sets the component's style.
if style is None or '' == style:
self._styles = None
self.requestRepaint()
return
if self._styles is None:
self._styles = list()
del self._styles[:]
self._styles.extend(style.split())
self.requestRepaint()
def addStyleName(self, style):
if style is None or '' == style:
return
if self._styles is None:
self._styles = list()
for s in style.split():
if s not in self._styles:
self._styles.append(s)
self.requestRepaint()
def removeStyleName(self, style):
if self._styles is not None:
for s in style.split():
if s in self._styles:
self._styles.remove(s)
self.requestRepaint()
def getCaption(self):
# Get's the component's caption.
return self._caption
def setCaption(self, caption):
"""Sets the component's caption string. Caption is the
visible name of the component. This method will trigger a
L{RepaintRequestEvent}.
@param caption:
the new caption string for the component.
"""
self._caption = caption
self.requestRepaint()
def getLocale(self):
if self._locale is not None:
return self._locale
if self._parent is not None:
return self._parent.getLocale()
app = self.getApplication()
if app is not None:
return app.getLocale()
return None
def setLocale(self, locale):
"""Sets the locale of this component::
# IComponent for which the locale is meaningful
date = InlineDateField("Datum")
# German language specified with ISO 639-1 language
# code and ISO 3166-1 alpha-2 country code.
date.setLocale(Locale("de", "DE"))
date.setResolution(DateField.RESOLUTION_DAY)
layout.addComponent(date)
@param locale:
the locale to become this component's locale.
"""
self._locale = locale
self.requestRepaint()
def getIcon(self):
# Gets the component's icon resource.
return self._icon
def setIcon(self, icon):
"""Sets the component's icon. This method will trigger a
L{RepaintRequestEvent<IPaintable.RepaintRequestEvent>}.
@param icon:
the icon to be shown with the component's caption.
"""
self._icon = icon
self.requestRepaint()
def isEnabled(self):
# Tests if the component is enabled or not.
return (self._enabled and ((self._parent is None)
or (self._parent.isEnabled())) and self.isVisible())
def setEnabled(self, enabled):
# Enables or disables the component. Don't add a JavaDoc comment
# here, we use the default documentation from implemented interface.
if self._enabled != enabled:
wasEnabled = self._enabled
wasEnabledInContext = self.isEnabled()
self._enabled = enabled
isEnabled = enabled
isEnabledInContext = self.isEnabled()
# If the actual enabled state (as rendered, in context) has not
# changed we do not need to repaint except if the parent is
# invisible.
# If the parent is invisible we must request a repaint so the
# component is repainted with the new enabled state when the
# parent is set visible again. This workaround is needed as
# isEnabled checks isVisible.
needRepaint = ((wasEnabledInContext != isEnabledInContext)
or (wasEnabled != isEnabled
and (self.getParent() is None)
or (not self.getParent().isVisible())))
if needRepaint:
self.requestRepaint()
def isImmediate(self):
# Tests if the component is in the immediate mode.
return self._immediate
def setImmediate(self, immediate):
"""Sets the component's immediate mode to the specified status.
This method will trigger a L{RepaintRequestEvent}.
@param immediate:
the boolean value specifying if the component should
be in the immediate mode after the call.
@see: L{IComponent.isImmediate}
"""
self._immediate = immediate
self.requestRepaint()
def isVisible(self):
return (self._visible
and (self.getParent() is None
or self.getParent().isVisible()))
def setVisible(self, visible):
if self._visible != visible:
self._visible = visible
# Instead of requesting repaint normally we
# fire the event directly to assure that the
# event goes through event in the component might
# now be invisible
self.fireRequestRepaintEvent(None)
def getDescription(self):
"""Gets the component's description. The description can be used
to briefly describe the state of the component to the user. The
description string may contain certain XML tags:
<table border=1>
<tr>
<td width=120><b>Tag</b></td>
<td width=120><b>Description</b></td>
<td width=120><b>Example</b></td>
</tr>
<tr>
<td><b></td>
<td>bold</td>
<td><b>bold text</b></td>
</tr>
<tr>
<td><i></td>
<td>italic</td>
<td><i>italic text</i></td>
</tr>
<tr>
<td><u></td>
<td>underlined</td>
<td><u>underlined text</u></td>
</tr>
<tr>
<td><br></td>
<td>linebreak</td>
<td>N/A</td>
</tr>
<tr>
<td><ul><br>
<li>item1<br>
<li>item1<br>
</ul></td>
<td>item list</td>
<td>
<ul>
<li>item1
<li>item2
</ul>
</td>
</tr>
</table>
These tags may be nested.
@return: component's description string
"""
return self._description
def setDescription(self, description):
"""Sets the component's description. See L{getDescription}
for more information on what the description is. This method will
trigger a L{RepaintRequestEvent}.
@param description:
the new description string for the component.
"""
self._description = description
self.requestRepaint()
def getParent(self):
# Gets the component's parent component.
return self._parent
def setParent(self, parent):
# Sets the parent component.
# If the parent is not changed, don't do anything
if parent == self._parent:
return
if parent is not None and self._parent is not None:
raise ValueError, fullname(self) + ' already has a parent.'
# Send detach event if the component have been connected to a window
if self.getApplication() is not None:
self.detach()
# Connect to new parent
self._parent = parent
# Send attach event if connected to a window
if self.getApplication() is not None:
self.attach()
def getErrorMessage(self):
"""Gets the error message for this component.
@return: ErrorMessage containing the description of the error state
of the component or null, if the component contains no errors.
Extending classes should override this method if they support
other error message types such as validation errors or
buffering errors. The returned error message contains
information about all the errors.
"""
return self._componentError
def getComponentError(self):
"""Gets the component's error message.
@return: the component's error message.
"""
return self._componentError
def setComponentError(self, componentError):
"""Sets the component's error message. The message may contain
certain XML tags.
@param componentError:
the new C{ErrorMessage} of the component.
"""
self._componentError = componentError
self.fireComponentErrorEvent()
self.requestRepaint()
def isReadOnly(self):
# Tests if the component is in read-only mode.
return self._readOnly
def setReadOnly(self, readOnly):
# Sets the component's read-only mode.
self._readOnly = readOnly
self.requestRepaint()
def getWindow(self):
# Gets the parent window of the component.
if self._parent is None:
return None
else:
return self._parent.getWindow()
def attach(self):
# Notify the component that it's attached to a window.
self.requestRepaint()
if not self._visible:
# Bypass the repaint optimization in childRequestedRepaint
# method when attaching. When reattaching (possibly moving)
# must repaint
self.fireRequestRepaintEvent(None)
if self._delayedFocus:
self.focus()
def detach(self):
# Detach the component from application.
pass
def focus(self):
"""Sets the focus for this component if the component is
L{IFocusable}.
"""
if isinstance(self, IFocusable):
app = self.getApplication()
if app is not None:
self.getWindow().setFocusedComponent(self)
self._delayedFocus = False
else:
self._delayedFocus = True
def getApplication(self):
# Gets the parent application of the component.
if self._parent is None:
return None
else:
return self._parent.getApplication()
def requestRepaintRequests(self):
self._repaintRequestListenersNotified = False
def paint(self, target):
# Paints the component into a UIDL stream.
tag = target.getTag(self)
if ((not target.startTag(self, tag))
or self._repaintRequestListenersNotified):
# Paint the contents of the component
# Only paint content of visible components.
if self.isVisible():
from muntjac.terminal.gwt.server.component_size_validator \
import ComponentSizeValidator # FIXME: circular import
if (self.getHeight() >= 0
and (self.getHeightUnits() != self.UNITS_PERCENTAGE
or ComponentSizeValidator.parentCanDefineHeight(self))):
target.addAttribute('height', '' + self.getCSSHeight())
if (self.getWidth() >= 0
and (self.getWidthUnits() != self.UNITS_PERCENTAGE
or ComponentSizeValidator.parentCanDefineWidth(self))):
target.addAttribute('width', '' + self.getCSSWidth())
if self._styles is not None and len(self._styles) > 0:
target.addAttribute('style', self.getStyle())
if self.isReadOnly():
target.addAttribute('readonly', True)
if self.isImmediate():
target.addAttribute('immediate', True)
if not self.isEnabled():
target.addAttribute('disabled', True)
if self.getCaption() is not None:
target.addAttribute('caption', self.getCaption())
if self.getIcon() is not None:
target.addAttribute('icon', self.getIcon())
if (self.getDescription() is not None
and len(self.getDescription()) > 0):
target.addAttribute('description', self.getDescription())
if self._eventIdentifiers is not None:
target.addAttribute('eventListeners',
list(self._eventIdentifiers))
self.paintContent(target)
error = self.getErrorMessage()
if error is not None:
error.paint(target)
else:
target.addAttribute('invisible', True)
else:
# Contents have not changed, only cached presentation can be used
target.addAttribute('cached', True)
target.endTag(tag)
self._repaintRequestListenersNotified = False
def getCSSHeight(self):
"""Build CSS compatible string representation of height.
@return: CSS height
"""
if self.getHeightUnits() == self.UNITS_PIXELS:
return (str( int(self.getHeight()) )
+ self.UNIT_SYMBOLS[self.getHeightUnits()])
else:
return (str(self.getHeight())
+ self.UNIT_SYMBOLS[self.getHeightUnits()])
def getCSSWidth(self):
"""Build CSS compatible string representation of width.
@return: CSS width
"""
if self.getWidthUnits() == self.UNITS_PIXELS:
return (str( int(self.getWidth()) )
+ self.UNIT_SYMBOLS[self.getWidthUnits()])
else:
return (str(self.getWidth())
+ self.UNIT_SYMBOLS[self.getWidthUnits()])
def paintContent(self, target):
"""Paints any needed component-specific things to the given UIDL
stream. The more general L{paint} method handles
all general attributes common to all components, and it calls this
method to paint any component-specific attributes to the UIDL stream.
@param target:
the target UIDL stream where the component should paint
itself to
@raise PaintException:
if the paint operation failed.
"""
pass
def requestRepaint(self):
# The effect of the repaint request is identical to case where
# a child requests repaint
self.childRequestedRepaint(None)
def childRequestedRepaint(self, alreadyNotified):
# Invisible components (by flag in this particular component)
# do not need repaints
if not self._visible:
return
self.fireRequestRepaintEvent(alreadyNotified)
def fireRequestRepaintEvent(self, alreadyNotified):
"""Fires the repaint request event.
"""
# Notify listeners only once
if not self._repaintRequestListenersNotified:
# Notify the listeners
if (self._repaintRequestListeners is not None
and len(self._repaintRequestListeners) > 0):
listeners = list(self._repaintRequestListeners)
event = RepaintRequestEvent(self)
for listener in listeners:
if alreadyNotified is None:
alreadyNotified = list()
if listener not in alreadyNotified:
listener.repaintRequested(event)
alreadyNotified.append(listener)
self._repaintRequestListenersNotified = True
# Notify the parent
parent = self.getParent()
if parent is not None:
parent.childRequestedRepaint(alreadyNotified)
def addListener(self, listener, iface=None):
if (isinstance(listener, IListener) and
(iface is None or iface == IListener)):
self.registerListener(ComponentEvent, listener,
_COMPONENT_EVENT_METHOD)
if (isinstance(listener, IRepaintRequestListener) and
(iface is None or iface == IRepaintRequestListener)):
if self._repaintRequestListeners is None:
self._repaintRequestListeners = list()
if listener not in self._repaintRequestListeners:
self._repaintRequestListeners.append(listener)
def registerListener(self, *args):
"""Registers a new listener with the specified activation method to
listen events generated by this component. If the activation method
does not have any arguments the event object will not be passed to
it when it's called.
This method additionally informs the event-api to route events with
the given eventIdentifier to the components handleEvent function
call.
For more information on the inheritable event mechanism see the
L{muntjac.event package documentation<muntjac.event>}.
@param args: tuple of the form
- (eventIdentifier, eventType, target, method)
1. the identifier of the event to listen for
2. the type of the listened event. Events of this type or
its subclasses activate the listener.
3. the object instance who owns the activation method.
4. the activation method.
- (eventType, target, method)
1. the type of the listened event. Events of this type or
its subclasses activate the listener.
2. the object instance who owns the activation method.
3. the activation method or the name of the activation method.
"""
nargs = len(args)
if nargs == 3:
eventType, target, method = args
if self._eventRouter is None:
self._eventRouter = EventRouter()
self._eventRouter.addListener(eventType, target, method)
elif nargs == 4:
eventIdentifier, eventType, target, method = args
if self._eventRouter is None:
self._eventRouter = EventRouter()
if self._eventIdentifiers is None:
self._eventIdentifiers = set()
needRepaint = not self._eventRouter.hasListeners(eventType)
self._eventRouter.addListener(eventType, target, method)
if needRepaint:
self._eventIdentifiers.add(eventIdentifier)
self.requestRepaint()
else:
raise ValueError, 'invalid number of arguments'
def registerCallback(self, eventType, callback, eventId, *args):
if hasattr(callback, 'im_self'):
target = callback.im_self
elif hasattr(callback, 'func_name'):
target = None
else:
raise ValueError('invalid callback: %s' % callback)
if len(args) > 0:
arguments = (None,) + args # assume event always passed first
eventArgIdx = 0
else:
arguments = None
eventArgIdx = None
if self._eventRouter is None:
self._eventRouter = EventRouter()
if self._eventIdentifiers is None:
self._eventIdentifiers = set()
if eventId is not None:
needRepaint = not self._eventRouter.hasListeners(eventType)
self._eventRouter.addListener(eventType, target, callback,
arguments, eventArgIdx)
if (eventId is not None) and needRepaint:
self._eventIdentifiers.add(eventId)
self.requestRepaint()
def removeListener(self, listener, iface=None):
if (isinstance(listener, IListener) and
(iface is None or iface == IListener)):
self.removeListener(ComponentEvent, listener,
_COMPONENT_EVENT_METHOD)
if (isinstance(listener, IRepaintRequestListener) and
(iface is None or iface == IRepaintRequestListener)):
if self._repaintRequestListeners is not None:
self._repaintRequestListeners.remove(listener)
if len(self._repaintRequestListeners) == 0:
self._repaintRequestListeners = None
def withdrawListener(self, *args):
"""Removes all registered listeners matching the given parameters.
Since this method receives the event type and the listener object
as parameters, it will unregister all C{object}'s methods that are
registered to listen to events of type C{eventType} generated by
this component.
This method additionally informs the event-api to stop routing
events with the given eventIdentifier to the components handleEvent
function call.
For more information on the inheritable event mechanism see the
L{muntjac.event package documentation<muntjac.event>}.
@param args: tuple of the form
- (eventIdentifier, eventType, target)
1. the identifier of the event to stop listening for
2. the exact event type the C{object} listens to.
3. the target object that has registered to listen to events
of type C{eventType} with one or more methods.
- (eventType, target)
1. the exact event type the C{object} listens to.
2. the target object that has registered to listen to events
of type C{eventType} with one or more methods.
- (eventType, target, method)
1. the exact event type the C{object} listens to.
2. the target object that has registered to listen to events
of type C{eventType} with one or more methods.
3. the method or the name of the method owned by C{target}
that's registered to listen to events of type C{eventType}.
"""
nargs = len(args)
if nargs == 2:
eventType, target = args
if self._eventRouter is not None:
self._eventRouter.removeListener(eventType, target)
elif nargs == 3:
if isinstance(args[0], basestring):
eventIdentifier, eventType, target = args
if self._eventRouter is not None:
self._eventRouter.removeListener(eventType, target)
if not self._eventRouter.hasListeners(eventType):
self._eventIdentifiers.remove(eventIdentifier)
self.requestRepaint()
else:
if isinstance(args[2], basestring):
eventType, target, methodName = args
if self._eventRouter is not None:
self._eventRouter.removeListener(eventType, target,
methodName)
else:
eventType, target, method = args
if self._eventRouter is not None:
self._eventRouter.removeListener(eventType, target,
method)
else:
raise ValueError, 'invalid number of arguments'
def changeVariables(self, source, variables):
# Invoked when the value of a variable has changed.
pass
def hasListeners(self, eventType):
"""Checks if the given L{Event} type is listened for this
component.
@param eventType:
the event type to be checked
@return: true if a listener is registered for the given event type
"""
return (self._eventRouter is not None
and self._eventRouter.hasListeners(eventType))
def getListeners(self, eventType):
"""Returns all listeners that are registered for the given event
type or one of its subclasses.
@param eventType:
The type of event to return listeners for.
@return: A collection with all registered listeners. Empty if no
listeners are found.
"""
if issubclass(eventType, RepaintRequestEvent):
# RepaintRequestListeners are not stored in eventRouter
if self._repaintRequestListeners is None:
return list()
else:
return self._repaintRequestListeners
if self._eventRouter is None:
return list()
return self._eventRouter.getListeners(eventType)
def fireEvent(self, event):
"""Sends the event to all listeners.
@param event:
the Event to be sent to all listeners.
"""
if self._eventRouter is not None:
self._eventRouter.fireEvent(event)
def fireComponentEvent(self):
"""Emits the component event. It is transmitted to all registered
listeners interested in such events.
"""
self.fireEvent( ComponentEvent(self) )
def fireComponentErrorEvent(self):
"""Emits the component error event. It is transmitted to all
registered listeners interested in such events.
"""
self.fireEvent( component.ErrorEvent(self.getComponentError(), self) )
def setData(self, data):
"""Sets the data object, that can be used for any application
specific data. The component does not use or modify this data.
@param data:
the Application specific data.
"""
self._applicationData = data
def getData(self):
"""Gets the application specific data. See L{setData}.
@return: the Application specific data set with setData function.
"""
return self._applicationData
def getHeight(self):
return self._height
def getHeightUnits(self):
return self._heightUnit
def getWidth(self):
return self._width
def getWidthUnits(self):
return self._widthUnit
def setHeight(self, height, unit=None):
if unit is None:
if isinstance(height, float):
self.setHeight(height, self.getHeightUnits())
else:
p = self.parseStringSize(height)
self.setHeight(p[0], p[1])
else:
self._height = height
self._heightUnit = unit
self.requestRepaint()
#ComponentSizeValidator.setHeightLocation(this);
def setHeightUnits(self, unit):
self.setHeight(self.getHeight(), unit)
def setSizeFull(self):
self.setWidth(100, self.UNITS_PERCENTAGE)
self.setHeight(100, self.UNITS_PERCENTAGE)
def setSizeUndefined(self):
self.setWidth(-1, self.UNITS_PIXELS)
self.setHeight(-1, self.UNITS_PIXELS)
def setWidth(self, width, unit=None):
if unit is None:
if isinstance(width, float):
self.setWidth(width, self.getWidthUnits())
else:
p = self.parseStringSize(width)
self.setWidth(p[0], p[1])
else:
self._width = width
self._widthUnit = unit
self.requestRepaint()
#ComponentSizeValidator.setWidthLocation(this);
def setWidthUnits(self, unit):
self.setWidth(self.getWidth(), unit)
def parseStringSize(self, s):
"""Returns array with size in index 0 unit in index 1. Null or empty
string will produce {-1,UNITS_PIXELS}.
"""
values = [-1, self.UNITS_PIXELS]
if s == None:
return values
s = s.strip()
if s == '':
return values
match = self._sizePattern.match(s)
if bool(match) == True:
values[0] = float( match.group(1) )
if values[0] < 0:
values[0] = -1
else:
unit = match.group(3)
if unit == None:
values[1] = self.UNITS_PIXELS
elif unit == "px":
values[1] = self.UNITS_PIXELS
elif unit == "%":
values[1] = self.UNITS_PERCENTAGE
elif unit == "em":
values[1] = self.UNITS_EM
elif unit == "ex":
values[1] = self.UNITS_EX
elif unit == "in":
values[1] = self.UNITS_INCH
elif unit == "cm":
values[1] = self.UNITS_CM
elif unit == "mm":
values[1] = self.UNITS_MM
elif unit == "pt":
values[1] = self.UNITS_POINTS
elif unit == "pc":
values[1] = self.UNITS_PICAS
else:
raise ValueError, "Invalid size argument: " + s
return values
def getErrorHandler(self):
"""Gets the error handler for the component.
The error handler is dispatched whenever there is an error
processing the data coming from the client.
"""
return self.errorHandler
def setErrorHandler(self, errorHandler):
"""Sets the error handler for the component.
The error handler is dispatched whenever there is an error
processing the data coming from the client.
If the error handler is not set, the application error handler
is used to handle the exception.
@param errorHandler:
AbstractField specific error handler
"""
self.errorHandler = errorHandler
def handleError(self, error):
"""Handle the component error event.
@param error:
Error event to handle
@return: True if the error has been handled False, otherwise. If
the error haven't been handled by this component, it will
be handled in the application error handler.
"""
if self.errorHandler != None:
return self.errorHandler.handleComponentError(error)
return False
class AbstractComponent(IComponent, IMethodEventSource):
"""An abstract class that defines default implementation for the
L{IComponent} interface. Basic UI components that are not derived
from an external component can inherit this class to easily qualify
as Muntjac components. Most components in Muntjac do just that.
@author: Vaadin Ltd.
@author: Richard Lincoln
@version: @VERSION@
"""
SIZE_PATTERN = '^(-?\\d+(\\.\\d+)?)(%|px|em|ex|in|cm|mm|pt|pc)?$'
def __init__(self):
"""Constructs a new IComponent."""
super(AbstractComponent, self).__init__()
#: Style names.
self._styles = None
#: Caption text.
self._caption = None
#: Application specific data object. The component does not use
# or modify this.
self._applicationData = None
#: Icon to be shown together with caption.
self._icon = None
#: Is the component enabled (its normal usage is allowed).
self._enabled = True
#: Is the component visible (it is rendered).
self._visible = True
#: Is the component read-only ?
self._readOnly = False
#: Description of the usage (XML).
self._description = None
#: The container this component resides in.
self._parent = None
#: The EventRouter used for the event model.
self._eventRouter = None
#: A set of event identifiers with registered listeners.
self._eventIdentifiers = None
#: The internal error message of the component.
self._componentError = None
#: Immediate mode: if true, all variable changes are required
# to be sent from the terminal immediately.
self._immediate = False
#: Locale of this component.
self._locale = None
#: The component should receive focus (if L{IFocusable})
# when attached.
self._delayedFocus = None
#: List of repaint request listeners or null if not listened at all.
self._repaintRequestListeners = list()
self._repaintRequestCallbacks = dict()
#: Are all the repaint listeners notified about recent changes ?
self._repaintRequestListenersNotified = False
self._testingId = None
# Sizeable fields
self._width = self.SIZE_UNDEFINED
self._height = self.SIZE_UNDEFINED
self._widthUnit = self.UNITS_PIXELS
self._heightUnit = self.UNITS_PIXELS
self._sizePattern = re.compile(self.SIZE_PATTERN)
self.errorHandler = None
#ComponentSizeValidator.setCreationLocation(self)
def __getstate__(self):
result = self.__dict__.copy()
del result['_sizePattern']
return result
def __setstate__(self, d):
self.__dict__ = d
self._sizePattern = re.compile(self.SIZE_PATTERN)
def setDebugId(self, idd):
self._testingId = idd
def getDebugId(self):
return self._testingId
def getStyle(self):
"""Gets style for component. Multiple styles are joined with spaces.
@return: the component's styleValue of property style.
@deprecated: Use getStyleName() instead; renamed for consistency and
to indicate that "style" should not be used to switch
client side implementation, only to style the component.
"""
warn('Use getStyleName() instead', DeprecationWarning)
return self.getStyleName()
def setStyle(self, style):
"""Sets and replaces all previous style names of the component. This
method will trigger a L{RepaintRequestEvent}.
@param style:
the new style of the component.
@deprecated: Use setStyleName() instead; renamed for consistency and
to indicate that "style" should not be used to switch
client side implementation, only to style the component.
"""
warn('Use setStyleName() instead', DeprecationWarning)
self.setStyleName(style)
def getStyleName(self):
# Gets the component's style.
s = ''
if self._styles is not None:
s = ' '.join(self._styles)
return s
def setStyleName(self, style):
# Sets the component's style.
if style is None or style == '':
self._styles = None
self.requestRepaint()
return
if self._styles is None:
self._styles = list()
del self._styles[:]
styleParts = style.split()
for part in styleParts:
if len(part) > 0:
self._styles.append(part)
self.requestRepaint()
def addStyleName(self, style):
if style is None or style == '':
return
if self._styles is None:
self._styles = list()
for s in style.split():
if s not in self._styles:
self._styles.append(s)
self.requestRepaint()
def removeStyleName(self, style):
if self._styles is not None:
styleParts = style.split()
for part in styleParts:
if len(part) > 0 and part in self._styles:
self._styles.remove(part)
self.requestRepaint()
def getCaption(self):
# Get's the component's caption.
return self._caption
def setCaption(self, caption):
"""Sets the component's caption string. Caption is the
visible name of the component. This method will trigger a
L{RepaintRequestEvent}.
@param caption:
the new caption string for the component.
"""
self._caption = caption
self.requestRepaint()
def getLocale(self):
if self._locale is not None:
return self._locale
if self._parent is not None:
return self._parent.getLocale()
app = self.getApplication()
if app is not None:
return app.getLocale()
return None
def setLocale(self, locale):
"""Sets the locale of this component::
# IComponent for which the locale is meaningful
date = InlineDateField("Datum")
# German language specified with ISO 639-1 language
# code and ISO 3166-1 alpha-2 country code.
date.setLocale(Locale("de", "DE"))
date.setResolution(DateField.RESOLUTION_DAY)
layout.addComponent(date)
@param locale:
the locale to become this component's locale.
"""
self._locale = locale
self.requestRepaint()
def getIcon(self):
# Gets the component's icon resource.
return self._icon
def setIcon(self, icon):
"""Sets the component's icon. This method will trigger a
L{RepaintRequestEvent<IPaintable.RepaintRequestEvent>}.
@param icon:
the icon to be shown with the component's caption.
"""
self._icon = icon
self.requestRepaint()
def isEnabled(self):
# Tests if the component is enabled or not.
return (self._enabled
and ((self._parent is None) or (self._parent.isEnabled()))
and self.isVisible())
def setEnabled(self, enabled):
# Enables or disables the component. Don't add a JavaDoc comment
# here, we use the default documentation from implemented interface.
if self._enabled != enabled:
wasEnabled = self._enabled
wasEnabledInContext = self.isEnabled()
self._enabled = enabled
isEnabled = enabled
isEnabledInContext = self.isEnabled()
# If the actual enabled state (as rendered, in context) has not
# changed we do not need to repaint except if the parent is
# invisible.
# If the parent is invisible we must request a repaint so the
# component is repainted with the new enabled state when the
# parent is set visible again. This workaround is needed as
# isEnabled checks isVisible.
needRepaint = ((wasEnabledInContext != isEnabledInContext)
or (wasEnabled != isEnabled and
(self.getParent() is None) or
(not self.getParent().isVisible())))
if needRepaint:
self.requestRepaint()
def isImmediate(self):
# Tests if the component is in the immediate mode.
return self._immediate
def setImmediate(self, immediate):
"""Sets the component's immediate mode to the specified status.
This method will trigger a L{RepaintRequestEvent}.
@param immediate:
the boolean value specifying if the component should
be in the immediate mode after the call.
@see: L{IComponent.isImmediate}
"""
self._immediate = immediate
self.requestRepaint()
def isVisible(self):
return (self._visible
and (self.getParent() is None or self.getParent().isVisible()))
def setVisible(self, visible):
if self._visible != visible:
self._visible = visible
# Instead of requesting repaint normally we
# fire the event directly to assure that the
# event goes through event in the component might
# now be invisible
self.fireRequestRepaintEvent(None)
def getDescription(self):
"""Gets the component's description, used in tooltips and can be
displayed directly in certain other components such as forms. The
description can be used to briefly describe the state of the
component to the user. The description string may contain certain
XML tags::
<table border=1>
<tr>
<td width=120><b>Tag</b></td>
<td width=120><b>Description</b></td>
<td width=120><b>Example</b></td>
</tr>
<tr>
<td><b></td>
<td>bold</td>
<td><b>bold text</b></td>
</tr>
<tr>
<td><i></td>
<td>italic</td>
<td><i>italic text</i></td>
</tr>
<tr>
<td><u></td>
<td>underlined</td>
<td><u>underlined text</u></td>
</tr>
<tr>
<td><br></td>
<td>linebreak</td>
<td>N/A</td>
</tr>
<tr>
<td><ul><br>
<li>item1<br>
<li>item1<br>
</ul></td>
<td>item list</td>
<td>
<ul>
<li>item1
<li>item2
</ul>
</td>
</tr>
</table>
These tags may be nested.
@return: component's description string
"""
return self._description
def setDescription(self, description):
"""Sets the component's description. See L{getDescription}
for more information on what the description is. This method will
trigger a L{RepaintRequestEvent}.
The description is displayed as HTML/XHTML in tooltips or directly in
certain components so care should be taken to avoid creating the
possibility for HTML injection and possibly XSS vulnerabilities.
@param description:
the new description string for the component.
"""
self._description = description
self.requestRepaint()
def getParent(self):
# Gets the component's parent component.
return self._parent
def setParent(self, parent):
# Sets the parent component.
# If the parent is not changed, don't do anything
if parent == self._parent:
return
if parent is not None and self._parent is not None:
raise ValueError, fullname(self) + ' already has a parent.'
# Send detach event if the component have been connected to a window
if self.getApplication() is not None:
self.detach()
# Connect to new parent
self._parent = parent
# Send attach event if connected to a window
if self.getApplication() is not None:
self.attach()
def getErrorMessage(self):
"""Gets the error message for this component.
@return: ErrorMessage containing the description of the error state
of the component or null, if the component contains no errors.
Extending classes should override this method if they support
other error message types such as validation errors or
buffering errors. The returned error message contains
information about all the errors.
"""
return self._componentError
def getComponentError(self):
"""Gets the component's error message.
@return: the component's error message.
"""
return self._componentError
def setComponentError(self, componentError):
"""Sets the component's error message. The message may contain
certain XML tags.
@param componentError:
the new C{ErrorMessage} of the component.
"""
self._componentError = componentError
self.fireComponentErrorEvent()
self.requestRepaint()
def isReadOnly(self):
# Tests if the component is in read-only mode.
return self._readOnly
def setReadOnly(self, readOnly):
# Sets the component's read-only mode.
self._readOnly = readOnly
self.requestRepaint()
def getWindow(self):
# Gets the parent window of the component.
if self._parent is None:
return None
else:
return self._parent.getWindow()
def attach(self):
# Notify the component that it's attached to a window.
self.requestRepaint()
if not self._visible:
# Bypass the repaint optimization in childRequestedRepaint
# method when attaching. When reattaching (possibly moving)
# must repaint
self.fireRequestRepaintEvent(None)
if self._delayedFocus:
self.focus()
def detach(self):
# Detach the component from application.
pass
def focus(self):
"""Sets the focus for this component if the component is
L{IFocusable}.
"""
if isinstance(self, IFocusable):
app = self.getApplication()
if app is not None:
self.getWindow().setFocusedComponent(self)
self._delayedFocus = False
else:
self._delayedFocus = True
def getApplication(self):
"""Gets the application object to which the component is attached.
The method will return C{None} if the component is not currently
attached to an application. This is often a problem in constructors
of regular components and in the initializers of custom composite
components. A standard workaround is to move the problematic
initialization to L{attach}, as described in the documentation
of the method.
B{This method is not meant to be overridden.}
@return: the parent application of the component or C{None}.
@see: L{attach}
"""
if self._parent is None:
return None
else:
return self._parent.getApplication()
def requestRepaintRequests(self):
self._repaintRequestListenersNotified = False
def paint(self, target):
"""Paints the Paintable into a UIDL stream. This method creates the
UIDL sequence describing it and outputs it to the given UIDL stream.
It is called when the contents of the component should be painted in
response to the component first being shown or having been altered so
that its visual representation is changed.
B{Do not override this to paint your component.} Override
L{paintContent} instead.
@param target:
the target UIDL stream where the component should paint
itself to.
@raise PaintException:
if the paint operation failed.
"""
tag = target.getTag(self)
if ((not target.startTag(self, tag))
or self._repaintRequestListenersNotified):
# Paint the contents of the component
# Only paint content of visible components.
if self.isVisible():
from muntjac.terminal.gwt.server.component_size_validator \
import ComponentSizeValidator # FIXME: circular import
if (self.getHeight() >= 0 and
(self.getHeightUnits() != self.UNITS_PERCENTAGE
or ComponentSizeValidator.parentCanDefineHeight(self))):
target.addAttribute('height', '' + self.getCSSHeight())
if (self.getWidth() >= 0 and
(self.getWidthUnits() != self.UNITS_PERCENTAGE
or ComponentSizeValidator.parentCanDefineWidth(self))):
target.addAttribute('width', '' + self.getCSSWidth())
if self._styles is not None and len(self._styles) > 0:
target.addAttribute('style', self.getStyle())
if self.isReadOnly():
target.addAttribute('readonly', True)
if self.isImmediate():
target.addAttribute('immediate', True)
if not self.isEnabled():
target.addAttribute('disabled', True)
if self.getCaption() is not None:
target.addAttribute('caption', self.getCaption())
if self.getIcon() is not None:
target.addAttribute('icon', self.getIcon())
if (self.getDescription() is not None
and len(self.getDescription()) > 0):
target.addAttribute('description', self.getDescription())
if self._eventIdentifiers is not None:
target.addAttribute('eventListeners',
list(self._eventIdentifiers))
self.paintContent(target)
error = self.getErrorMessage()
if error is not None:
error.paint(target)
else:
target.addAttribute('invisible', True)
else:
# Contents have not changed, only cached presentation can be used
target.addAttribute('cached', True)
target.endTag(tag)
self._repaintRequestListenersNotified = False
def getCSSHeight(self):
"""Build CSS compatible string representation of height.
@return: CSS height
"""
if self.getHeightUnits() == self.UNITS_PIXELS:
return (str(int(self.getHeight())) +
self.UNIT_SYMBOLS[self.getHeightUnits()])
else:
return (str(self.getHeight()) +
self.UNIT_SYMBOLS[self.getHeightUnits()])
def getCSSWidth(self):
"""Build CSS compatible string representation of width.
@return: CSS width
"""
if self.getWidthUnits() == self.UNITS_PIXELS:
return (str(int(self.getWidth())) +
self.UNIT_SYMBOLS[self.getWidthUnits()])
else:
return (str(self.getWidth()) +
self.UNIT_SYMBOLS[self.getWidthUnits()])
def paintContent(self, target):
"""Paints any needed component-specific things to the given UIDL
stream. The more general L{paint} method handles
all general attributes common to all components, and it calls this
method to paint any component-specific attributes to the UIDL stream.
@param target:
the target UIDL stream where the component should paint
itself to
@raise PaintException:
if the paint operation failed.
"""
pass
def requestRepaint(self):
# The effect of the repaint request is identical to case where
# a child requests repaint
self.childRequestedRepaint(None)
def childRequestedRepaint(self, alreadyNotified):
# Invisible components (by flag in this particular component)
# do not need repaints
if not self._visible:
return
self.fireRequestRepaintEvent(alreadyNotified)
def fireRequestRepaintEvent(self, alreadyNotified):
"""Fires the repaint request event.
"""
# Notify listeners only once
if not self._repaintRequestListenersNotified:
# Notify the listeners
event = RepaintRequestEvent(self)
for listener in self._repaintRequestListeners:
if alreadyNotified is None:
alreadyNotified = list()
if listener not in alreadyNotified:
listener.repaintRequested(event)
alreadyNotified.append(listener)
self._repaintRequestListenersNotified = True
for callback, args in self._repaintRequestCallbacks.iteritems():
if alreadyNotified is None:
alreadyNotified = list()
if callback not in alreadyNotified:
callback(event, *args)
alreadyNotified.append(callback)
self._repaintRequestListenersNotified = True
# Notify the parent
parent = self.getParent()
if parent is not None:
parent.childRequestedRepaint(alreadyNotified)
def addListener(self, listener, iface=None):
if (isinstance(listener, IListener)
and (iface is None or issubclass(iface, IListener))):
self.registerListener(ComponentEvent, listener,
_COMPONENT_EVENT_METHOD)
if (isinstance(listener, IRepaintRequestListener) and
(iface is None or issubclass(iface, IRepaintRequestListener))):
if listener not in self._repaintRequestListeners:
self._repaintRequestListeners.append(listener)
def addCallback(self, callback, eventType=None, *args):
if eventType is None:
eventType = callback._eventType
if issubclass(eventType, ComponentEvent):
self.registerCallback(ComponentEvent, callback, None, *args)
elif issubclass(eventType, RepaintRequestEvent):
self._repaintRequestCallbacks[callback] = args
else:
super(AbstractComponent, self).addCallback(callback, eventType,
*args)
def registerListener(self, *args):
"""Registers a new listener with the specified activation method to
listen events generated by this component. If the activation method
does not have any arguments the event object will not be passed to
it when it's called.
This method additionally informs the event-api to route events with
the given eventIdentifier to the components handleEvent function
call.
For more information on the inheritable event mechanism see the
L{muntjac.event package documentation<muntjac.event>}.
@param args: tuple of the form
- (eventIdentifier, eventType, target, method)
1. the identifier of the event to listen for
2. the type of the listened event. Events of this type or
its subclasses activate the listener.
3. the object instance who owns the activation method.
4. the activation method.
- (eventType, target, method)
1. the type of the listened event. Events of this type or
its subclasses activate the listener.
2. the object instance who owns the activation method.
3. the activation method or the name of the activation method.
"""
nargs = len(args)
if nargs == 3:
eventType, target, method = args
if self._eventRouter is None:
self._eventRouter = EventRouter()
self._eventRouter.addListener(eventType, target, method)
elif nargs == 4:
eventIdentifier, eventType, target, method = args
if self._eventRouter is None:
self._eventRouter = EventRouter()
if self._eventIdentifiers is None:
self._eventIdentifiers = set()
needRepaint = not self._eventRouter.hasListeners(eventType)
self._eventRouter.addListener(eventType, target, method)
if needRepaint:
self._eventIdentifiers.add(eventIdentifier)
self.requestRepaint()
else:
raise ValueError, 'invalid number of arguments'
def registerCallback(self, eventType, callback, eventId, *args):
if hasattr(callback, 'im_self'):
target = callback.im_self
elif hasattr(callback, 'func_name'):
target = None
else:
raise ValueError('invalid callback: %s' % callback)
if len(args) > 0:
arguments = (None, ) + args # assume event always passed first
eventArgIdx = 0
else:
arguments = None
eventArgIdx = None
if self._eventRouter is None:
self._eventRouter = EventRouter()
if self._eventIdentifiers is None:
self._eventIdentifiers = set()
if eventId is not None:
needRepaint = not self._eventRouter.hasListeners(eventType)
self._eventRouter.addListener(eventType, target, callback, arguments,
eventArgIdx)
if (eventId is not None) and needRepaint:
self._eventIdentifiers.add(eventId)
self.requestRepaint()
def removeListener(self, listener, iface=None):
if (isinstance(listener, IListener)
and (iface is None or issubclass(iface, IListener))):
self.withdrawListener(ComponentEvent, listener,
_COMPONENT_EVENT_METHOD)
if (isinstance(listener, IRepaintRequestListener) and
(iface is None or issubclass(iface, IRepaintRequestListener))):
if listener in self._repaintRequestListeners:
self._repaintRequestListeners.remove(listener)
def removeCallback(self, callback, eventType=None):
if eventType is None:
eventType = callback._eventType
if eventType == ComponentEvent:
self.withdrawCallback(ComponentEvent, callback)
elif eventType == RepaintRequestEvent:
if callback in self._repaintRequestCallbacks:
del self._repaintRequestCallbacks[callback]
else:
super(AbstractComponent, self).removeCallback(callback, eventType)
def withdrawListener(self, *args):
"""Removes all registered listeners matching the given parameters.
Since this method receives the event type and the listener object
as parameters, it will unregister all C{object}'s methods that are
registered to listen to events of type C{eventType} generated by
this component.
This method additionally informs the event-api to stop routing
events with the given eventIdentifier to the components handleEvent
function call.
For more information on the inheritable event mechanism see the
L{muntjac.event package documentation<muntjac.event>}.
@param args: tuple of the form
- (eventIdentifier, eventType, target)
1. the identifier of the event to stop listening for
2. the exact event type the C{object} listens to.
3. the target object that has registered to listen to events
of type C{eventType} with one or more methods.
- (eventType, target)
1. the exact event type the C{object} listens to.
2. the target object that has registered to listen to events
of type C{eventType} with one or more methods.
- (eventType, target, method)
1. the exact event type the C{object} listens to.
2. the target object that has registered to listen to events
of type C{eventType} with one or more methods.
3. the method or the name of the method owned by C{target}
that's registered to listen to events of type C{eventType}.
"""
nargs = len(args)
if nargs == 2:
eventType, target = args
if self._eventRouter is not None:
self._eventRouter.removeListener(eventType, target)
elif nargs == 3:
if isinstance(args[0], basestring):
eventIdentifier, eventType, target = args
if self._eventRouter is not None:
self._eventRouter.removeListener(eventType, target)
if not self._eventRouter.hasListeners(eventType):
self._eventIdentifiers.remove(eventIdentifier)
self.requestRepaint()
else:
if isinstance(args[2], basestring):
eventType, target, methodName = args
if self._eventRouter is not None:
self._eventRouter.removeListener(
eventType, target, methodName)
else:
eventType, target, method = args
if self._eventRouter is not None:
self._eventRouter.removeListener(
eventType, target, method)
else:
raise ValueError, 'invalid number of arguments'
def withdrawCallback(self, eventType, callback, eventId=None):
if self._eventRouter is not None:
if hasattr(callback, 'im_self'): # method
target = callback.im_self
elif hasattr(callback, 'func_name'): # function
target = None
else:
raise ValueError('invalid callback: %s' % callback)
self._eventRouter.removeListener(eventType, target, callback)
if (eventId is not None
and not self._eventRouter.hasListeners(eventType)):
self._eventIdentifiers.remove(eventId)
self.requestRepaint()
def changeVariables(self, source, variables):
# Invoked when the value of a variable has changed.
pass
def hasListeners(self, eventType):
"""Checks if the given L{Event} type is listened for this
component.
@param eventType:
the event type to be checked
@return: true if a listener is registered for the given event type
"""
return (self._eventRouter is not None
and self._eventRouter.hasListeners(eventType))
def getListeners(self, eventType):
"""Returns all listeners that are registered for the given event
type or one of its subclasses.
@param eventType:
The type of event to return listeners for.
@return: A collection with all registered listeners. Empty if no
listeners are found.
"""
if issubclass(eventType, RepaintRequestEvent):
# RepaintRequestListeners are not stored in eventRouter
return list(self._repaintRequestListeners)
if self._eventRouter is None:
return list()
return self._eventRouter.getListeners(eventType)
def fireEvent(self, event):
"""Sends the event to all listeners.
@param event:
the Event to be sent to all listeners.
"""
if self._eventRouter is not None:
self._eventRouter.fireEvent(event)
def fireComponentEvent(self):
"""Emits the component event. It is transmitted to all registered
listeners interested in such events.
"""
event = ComponentEvent(self)
self.fireEvent(event)
def fireComponentErrorEvent(self):
"""Emits the component error event. It is transmitted to all
registered listeners interested in such events.
"""
event = component.ErrorEvent(self.getComponentError(), self)
self.fireEvent(event)
def setData(self, data):
"""Sets the data object, that can be used for any application
specific data. The component does not use or modify this data.
@param data:
the Application specific data.
"""
self._applicationData = data
def getData(self):
"""Gets the application specific data. See L{setData}.
@return: the Application specific data set with setData function.
"""
return self._applicationData
def getHeight(self):
return self._height
def getHeightUnits(self):
return self._heightUnit
def getWidth(self):
return self._width
def getWidthUnits(self):
return self._widthUnit
def setHeight(self, height, unit=None):
if unit is None:
if isinstance(height, float):
self.setHeight(height, self.getHeightUnits())
else:
p = self.parseStringSize(height)
self.setHeight(p[0], p[1])
else:
self._height = height
self._heightUnit = unit
self.requestRepaint()
#ComponentSizeValidator.setHeightLocation(this);
def setHeightUnits(self, unit):
self.setHeight(self.getHeight(), unit)
def setSizeFull(self):
self.setWidth(100, self.UNITS_PERCENTAGE)
self.setHeight(100, self.UNITS_PERCENTAGE)
def setSizeUndefined(self):
self.setWidth(-1, self.UNITS_PIXELS)
self.setHeight(-1, self.UNITS_PIXELS)
def setWidth(self, width, unit=None):
if unit is None:
if isinstance(width, float):
self.setWidth(width, self.getWidthUnits())
else:
p = self.parseStringSize(width)
self.setWidth(p[0], p[1])
else:
self._width = width
self._widthUnit = unit
self.requestRepaint()
#ComponentSizeValidator.setWidthLocation(this);
def setWidthUnits(self, unit):
self.setWidth(self.getWidth(), unit)
def parseStringSize(self, s):
"""Returns array with size in index 0 unit in index 1. Null or empty
string will produce {-1,UNITS_PIXELS}.
"""
values = [-1, self.UNITS_PIXELS]
if s == None:
return values
s = s.strip()
if s == '':
return values
match = self._sizePattern.match(s)
if bool(match) == True:
values[0] = float(match.group(1))
if values[0] < 0:
values[0] = -1
else:
unit = match.group(3)
if unit == None:
values[1] = self.UNITS_PIXELS
elif unit == "px":
values[1] = self.UNITS_PIXELS
elif unit == "%":
values[1] = self.UNITS_PERCENTAGE
elif unit == "em":
values[1] = self.UNITS_EM
elif unit == "ex":
values[1] = self.UNITS_EX
elif unit == "in":
values[1] = self.UNITS_INCH
elif unit == "cm":
values[1] = self.UNITS_CM
elif unit == "mm":
values[1] = self.UNITS_MM
elif unit == "pt":
values[1] = self.UNITS_POINTS
elif unit == "pc":
values[1] = self.UNITS_PICAS
else:
raise ValueError, "Invalid size argument: " + s
return values
def getErrorHandler(self):
"""Gets the error handler for the component.
The error handler is dispatched whenever there is an error
processing the data coming from the client.
"""
return self.errorHandler
def setErrorHandler(self, errorHandler):
"""Sets the error handler for the component.
The error handler is dispatched whenever there is an error
processing the data coming from the client.
If the error handler is not set, the application error handler
is used to handle the exception.
@param errorHandler:
AbstractField specific error handler
"""
self.errorHandler = errorHandler
def handleError(self, error):
"""Handle the component error event.
@param error:
Error event to handle
@return: True if the error has been handled False, otherwise. If
the error haven't been handled by this component, it will
be handled in the application error handler.
"""
if self.errorHandler != None:
return self.errorHandler.handleComponentError(error)
return False
