Finish moving all qtlib py files to qt

qt/recent.py

@@ -0,0 +1,94 @@
+# Created By: Virgil Dupras
+# Created On: 2009-11-12
+# Copyright 2015 Hardcoded Software (http://www.hardcoded.net)
+#
+# This software is licensed under the "GPLv3" License as described in the "LICENSE" file,
+# which should be included with this package. The terms are also available at
+# http://www.gnu.org/licenses/gpl-3.0.html
+
+from collections import namedtuple
+
+from PyQt5.QtCore import pyqtSignal, QObject
+from PyQt5.QtWidgets import QAction
+
+from hscommon.trans import trget
+from hscommon.util import dedupe
+
+tr = trget("qtlib")  # TODO move to ui
+
+MenuEntry = namedtuple("MenuEntry", "menu fixedItemCount")
+
+
+class Recent(QObject):
+    def __init__(self, app, pref_name, max_item_count=10, **kwargs):
+        super().__init__(**kwargs)
+        self._app = app
+        self._menuEntries = []
+        self._prefName = pref_name
+        self._maxItemCount = max_item_count
+        self._items = []
+        self._loadFromPrefs()
+
+        self._app.willSavePrefs.connect(self._saveToPrefs)
+
+    # --- Private
+    def _loadFromPrefs(self):
+        items = getattr(self._app.prefs, self._prefName)
+        if not isinstance(items, list):
+            items = []
+        self._items = items
+
+    def _insertItem(self, item):
+        self._items = dedupe([item] + self._items)[: self._maxItemCount]
+
+    def _refreshMenu(self, menu_entry):
+        menu, fixed_item_count = menu_entry
+        for action in menu.actions()[fixed_item_count:]:
+            menu.removeAction(action)
+        for item in self._items:
+            action = QAction(item, menu)
+            action.setData(item)
+            action.triggered.connect(self.menuItemWasClicked)
+            menu.addAction(action)
+        menu.addSeparator()
+        action = QAction(tr("Clear List"), menu)
+        action.triggered.connect(self.clear)
+        menu.addAction(action)
+
+    def _refreshAllMenus(self):
+        for menu_entry in self._menuEntries:
+            self._refreshMenu(menu_entry)
+
+    def _saveToPrefs(self):
+        setattr(self._app.prefs, self._prefName, self._items)
+
+    # --- Public
+    def addMenu(self, menu):
+        menu_entry = MenuEntry(menu, len(menu.actions()))
+        self._menuEntries.append(menu_entry)
+        self._refreshMenu(menu_entry)
+
+    def clear(self):
+        self._items = []
+        self._refreshAllMenus()
+        self.itemsChanged.emit()
+
+    def insertItem(self, item):
+        self._insertItem(str(item))
+        self._refreshAllMenus()
+        self.itemsChanged.emit()
+
+    def isEmpty(self):
+        return not bool(self._items)
+
+    # --- Event Handlers
+    def menuItemWasClicked(self):
+        action = self.sender()
+        if action is not None:
+            item = action.data()
+            self.mustOpenItem.emit(item)
+            self._refreshAllMenus()
+
+    # --- Signals
+    mustOpenItem = pyqtSignal(str)
+    itemsChanged = pyqtSignal()