class StyleSheet(Element):
_compiled_style_sheet: CompiledStyleSheet
def __init__(self, id=None, model=None):
super().__init__(id, model)
self.compile_style_sheet()
styleSheet: attribute[str] = attribute("styleSheet", str, "")
def compile_style_sheet(self) -> None:
self._compiled_style_sheet = CompiledStyleSheet(self.styleSheet)
def match(self, node: StyleNode) -> Style:
return self._compiled_style_sheet.match(node)
def postload(self):
super().postload()
self.compile_style_sheet()
def handle(self, event):
# Ensure compiled style sheet is always up to date:
if (isinstance(event, AttributeUpdated)
and event.property is StyleSheet.styleSheet):
self.compile_style_sheet()
super().handle(event)
def test_broken_line_style():
# diagram css is missing the closing bracket
css = "diagram { line-style: sloppy * { }"
compiled_style_sheet = CompiledStyleSheet(css)
props = compiled_style_sheet.match(Node("mytype"))
assert props.get("line-style") is None
def test_line_style(css_value, result):
css = f"mytype {{ line-style: {css_value} }}"
compiled_style_sheet = CompiledStyleSheet(css)
props = compiled_style_sheet.match(Node("mytype"))
assert props.get("line-style") == result
def test_color_typing_in_progress():
css = "mytype { color: # }"
compiled_style_sheet = CompiledStyleSheet(css)
props = compiled_style_sheet.match(Node("mytype"))
assert props.get("color") is None
def test_color():
css = "mytype { color: #00ff00 }"
compiled_style_sheet = CompiledStyleSheet(css)
props = compiled_style_sheet.match(Node("mytype"))
assert props.get("color") == (0, 1, 0, 1)
def test_empty_compiled_style_sheet():
css = ""
compiled_style_sheet = CompiledStyleSheet(css)
props = compiled_style_sheet.match(Node("mytype"))
assert props == {}
def test_compiled_style_sheet():
css = """
* {
font-size: 42;
font-family: overridden
}
mytype {
font-family: sans
}
"""
compiled_style_sheet = CompiledStyleSheet(css)
props = compiled_style_sheet.match(Node("mytype"))
assert props.get("font-family") == "sans"
assert props.get("font-size") == 42