class Viewer:
def __init__(self, db_url, parent_panel, doc_callback=None, page_size=5):
self.db_url = db_url
self.parent_panel = parent_panel
self.doc_callback = doc_callback
self.page_size = page_size
def onModuleLoad(self):
## Grid setup
self.grid = Grid()
# Note: The resize method args are Rows,Cols (Curses style)
self.grid.resize(1,4)
self.grid.setBorderWidth(1)
self.grid.setHTML(0,0,'#')
self.grid.setHTML(0,1,'ID')
self.grid.setHTML(0,2,'Revision')
self.grid.setHTML(0,3,'Delete')
self.grid.addTableListener(self)
self.parent_panel.add(self.grid)
## Buttons
self.button_panel = HorizontalPanel()
# Prev
self.first_button = Button("<-", self.firstPage)
self.first_button.setEnabled(False)
self.button_panel.add(self.first_button)
self.prev_button = Button("Previous", self.prevPage)
self.prev_button.setEnabled(False)
self.button_panel.add(self.prev_button)
self.next_button = Button("Next", self.nextPage)
self.next_button.setEnabled(False)
self.button_panel.add(self.next_button)
self.parent_panel.add(self.button_panel)
def populate(self, json):
view_obj = JSONParser().decode(json)
view_rows = view_obj['rows']
offset = view_obj['offset']
num_rows = len(view_rows)
self.first_key = view_rows[0]['key']
if offset != 0:
self.first_button.setEnabled(True)
if num_rows > self.page_size:
self.next_key = view_rows[-1:][0]['key']
self.next_button.setEnabled(True)
self.grid.resize(self.page_size+1,4)
else:
self.grid.resize(num_rows+1,4)
for row_num in range(num_rows):
if row_num < self.page_size:
self.grid.setHTML(row_num+1, 0, 1+offset+row_num)
self.grid.setHTML(row_num+1, 1, view_rows[row_num]['key'])
self.grid.setHTML(row_num+1, 2,
view_rows[row_num]['value']['rev'])
self.grid.setHTML(row_num+1, 3, '<b>X O X</b>')
if len(self.prev_keys)>0:
self.prev_button.setEnabled(True)
def onCellClicked(self, sender, row, col):
doc_id = self.grid.getHTML(row, 1)
if col == 3:
doc_rev = self.grid.getHTML(row, 2)
url = self.db_url+doc_id+'?rev='+doc_rev
HTTPRequest().asyncDelete(None, None, url=url,
handler=DeleteHandler(self))
else:
if self.doc_callback is not None:
self.doc_callback(doc_id)
def firstPage(self):
self.loadPage(None)
def nextPage(self):
self.prev_keys.append(self.first_key)
self.loadPage(self.next_key)
def prevPage(self):
self.loadPage(self.prev_keys.pop())
def setView(self, view_path, first_key = None):
self.view_path = view_path
#self.prev_keys = []
#self.next_key = None
self.loadPage(first_key)
def loadPage(self, startkey=None):
limit = int(self.page_size)+1
view_url = self.db_url+self.view_path+'?limit=%d'%limit
if startkey is not None:
view_url += '&startkey="%s"'%startkey
else:
self.prev_keys = []
self.first_button.setEnabled(False)
self.next_button.setEnabled(False)
self.prev_button.setEnabled(False)
HTTPRequest().asyncGet(None, None, url=view_url,
handler=ViewLoader(self))
