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comparison src/browser/sat_browser/base_widget.py @ 603:462d0458e679 frontends_multi_profiles

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browser_side: base_widget.DropCell raises an exception if the callback doesn't return a LiberviaWidget instance
author souliane <souliane@mailoo.org>
date Sat, 07 Feb 2015 12:07:12 +0100
parents ed6d8f7c6026
children ea27925ef2a8
comparison
equal deleted inserted replaced
602:be3fd3874c3a 603:462d0458e679
44 44
45 import dialog 45 import dialog
46 import base_menu 46 import base_menu
47 47
48 48
49 class NoLiberviaWidgetException(Exception):
50 pass
51
52
49 class DragLabel(DragWidget): 53 class DragLabel(DragWidget):
50 54
51 def __init__(self, text, type_, host=None): 55 def __init__(self, text, type_, host=None):
52 """Base of Drag n Drop mecanism in Libervia 56 """Base of Drag n Drop mecanism in Libervia
53 57
104 self.host = host 108 self.host = host
105 self.setStyleName('dropCell') 109 self.setStyleName('dropCell')
106 110
107 @classmethod 111 @classmethod
108 def addDropKey(cls, key, cb): 112 def addDropKey(cls, key, cb):
109 """Add a association between a key and a class to create on drop 113 """Add a association between a key and a class to create on drop.
110 114
111 @param key: key to be associated (e.g. "CONTACT", "CHAT") 115 @param key: key to be associated (e.g. "CONTACT", "CHAT")
112 @param cb: either a LiberviaWidget instance, or a callback which return one 116 @param cb: a callable (either a class or method) returning a
117 LiberviaWidget instance
113 """ 118 """
114 DropCell.drop_keys[key] = cb 119 DropCell.drop_keys[key] = cb
115
116 120
117 def onDragEnter(self, event): 121 def onDragEnter(self, event):
118 if self == LiberviaDragWidget.current: 122 if self == LiberviaDragWidget.current:
119 return 123 return
120 self.addStyleName('dragover') 124 self.addStyleName('dragover')
136 cell = grid.getEventTargetCell(event) 140 cell = grid.getEventTargetCell(event)
137 row = DOM.getParent(cell) 141 row = DOM.getParent(cell)
138 return (row.rowIndex, cell.cellIndex) 142 return (row.rowIndex, cell.cellIndex)
139 143
140 def onDrop(self, event): 144 def onDrop(self, event):
145 """
146 @raise NoLiberviaWidgetException: something else than a LiberviaWidget
147 has been returned by the callback.
148 """
141 self.removeStyleName('dragover') 149 self.removeStyleName('dragover')
142 DOM.eventPreventDefault(event) 150 DOM.eventPreventDefault(event)
143 dt = event.dataTransfer 151 dt = event.dataTransfer
144 # 'text', 'text/plain', and 'Text' are equivalent. 152 # 'text', 'text/plain', and 'Text' are equivalent.
145 try: 153 try:
169 # as the target widget (self), we don't do anything 177 # as the target widget (self), we don't do anything
170 return 178 return
171 widgets_panel.removeWidget(_new_panel) 179 widgets_panel.removeWidget(_new_panel)
172 elif item_type in self.drop_keys: 180 elif item_type in self.drop_keys:
173 _new_panel = self.drop_keys[item_type](self.host, item) 181 _new_panel = self.drop_keys[item_type](self.host, item)
182 if not isinstance(_new_panel, LiberviaWidget):
183 raise NoLiberviaWidgetException
174 else: 184 else:
175 log.warning("unmanaged item type") 185 log.warning("unmanaged item type")
176 return 186 return
177 if isinstance(self, LiberviaWidget): 187 if isinstance(self, LiberviaWidget):
178 # self.host.unregisterWidget(self) # FIXME 188 # self.host.unregisterWidget(self) # FIXME