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96 lines
2.8 KiB
Python
96 lines
2.8 KiB
Python
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# Created By: Virgil Dupras
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# Created On: 2009-11-12
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# Copyright 2013 Hardcoded Software (http://www.hardcoded.net)
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#
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# This software is licensed under the "BSD" License as described in the "LICENSE" file,
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# which should be included with this package. The terms are also available at
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# http://www.hardcoded.net/licenses/bsd_license
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from collections import namedtuple
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from PyQt4.QtCore import pyqtSignal, QObject
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from PyQt4.QtGui import QAction
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from hscommon.trans import trget
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from hscommon.util import dedupe
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tr = trget('qtlib')
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MenuEntry = namedtuple('MenuEntry', 'menu fixedItemCount')
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class Recent(QObject):
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def __init__(self, app, prefName, maxItemCount=10):
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QObject.__init__(self)
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self._app = app
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self._menuEntries = []
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self._prefName = prefName
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self._maxItemCount = maxItemCount
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self._items = []
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self._loadFromPrefs()
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self._app.willSavePrefs.connect(self._saveToPrefs)
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#--- Private
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def _loadFromPrefs(self):
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items = getattr(self._app.prefs, self._prefName)
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if not isinstance(items, list):
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items = []
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self._items = items
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def _insertItem(self, item):
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self._items = dedupe([item] + self._items)[:self._maxItemCount]
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def _refreshMenu(self, menuEntry):
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menu, fixedItemCount = menuEntry
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for action in menu.actions()[fixedItemCount:]:
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menu.removeAction(action)
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for item in self._items:
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action = QAction(item, menu)
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action.setData(item)
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action.triggered.connect(self.menuItemWasClicked)
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menu.addAction(action)
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menu.addSeparator()
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action = QAction(tr("Clear List"), menu)
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action.triggered.connect(self.clear)
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menu.addAction(action)
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def _refreshAllMenus(self):
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for menuEntry in self._menuEntries:
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self._refreshMenu(menuEntry)
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def _saveToPrefs(self):
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setattr(self._app.prefs, self._prefName, self._items)
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#--- Public
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def addMenu(self, menu):
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menuEntry = MenuEntry(menu, len(menu.actions()))
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self._menuEntries.append(menuEntry)
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self._refreshMenu(menuEntry)
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def clear(self):
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self._items = []
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self._refreshAllMenus()
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self.itemsChanged.emit()
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def insertItem(self, item):
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self._insertItem(str(item))
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self._refreshAllMenus()
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self.itemsChanged.emit()
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def isEmpty(self):
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return not bool(self._items)
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#--- Event Handlers
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def menuItemWasClicked(self):
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action = self.sender()
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if action is not None:
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item = action.data()
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self.mustOpenItem.emit(item)
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self._refreshAllMenus()
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#--- Signals
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mustOpenItem = pyqtSignal(str)
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itemsChanged = pyqtSignal()
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