Mercurial Repositories > eric / file comparison
comparison: UI/BrowserSortFilterProxyModel.py
UI/BrowserSortFilterProxyModel.py
- changeset 0
- de9c2efb9d02
- child 13
- 1af94a91f439
equal
deleted
inserted
replaced
| -1:000000000000 | 0:de9c2efb9d02 |
|---|---|
| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2006 - 2009 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing the browser sort filter proxy model. | |
| 8 """ | |
| 9 | |
| 10 from PyQt4.QtCore import * | |
| 11 from PyQt4.QtGui import * | |
| 12 | |
| 13 import Preferences | |
| 14 | |
| 15 class BrowserSortFilterProxyModel(QSortFilterProxyModel): | |
| 16 """ | |
| 17 Class implementing the browser sort filter proxy model. | |
| 18 """ | |
| 19 def __init__(self, parent = None): | |
| 20 """ | |
| 21 Constructor | |
| 22 | |
| 23 @param parent reference to the parent object (QObject) | |
| 24 """ | |
| 25 QSortFilterProxyModel.__init__(self, parent) | |
| 26 self.hideNonPublic = Preferences.getUI("BrowsersHideNonPublic") | |
| 27 | |
| 28 def sort(self, column, order): | |
| 29 """ | |
| 30 Public method to sort the items. | |
| 31 | |
| 32 @param column column number to sort on (integer) | |
| 33 @param order sort order for the sort (Qt.SortOrder) | |
| 34 """ | |
| 35 self.__sortColumn = column | |
| 36 self.__sortOrder = order | |
| 37 QSortFilterProxyModel.sort(self, column, order) | |
| 38 | |
| 39 def lessThan(self, left, right): | |
| 40 """ | |
| 41 Protected method used to sort the displayed items. | |
| 42 | |
| 43 It implements a special sorting function that takes into account, | |
| 44 if folders should be shown first, and that __init__ is always the first | |
| 45 method of a class. | |
| 46 | |
| 47 @param left index of left item (QModelIndex) | |
| 48 @param right index of right item (QModelIndex) | |
| 49 @return true, if left is less than right (boolean) | |
| 50 """ | |
| 51 l = left.model() and left.model().item(left) or None | |
| 52 r = right.model() and right.model().item(right) or None | |
| 53 | |
| 54 if l and r: | |
| 55 return l.lessThan(r, self.__sortColumn, self.__sortOrder) | |
| 56 | |
| 57 return False | |
| 58 | |
| 59 def item(self, index): | |
| 60 """ | |
| 61 Public method to get a reference to an item. | |
| 62 | |
| 63 @param index index of the data to retrieve (QModelIndex) | |
| 64 @return requested item reference (BrowserItem) | |
| 65 """ | |
| 66 if not index.isValid(): | |
| 67 return None | |
| 68 | |
| 69 sindex = self.mapToSource(index) | |
| 70 return self.sourceModel().item(sindex) | |
| 71 | |
| 72 def hasChildren(self, parent = QModelIndex()): | |
| 73 """ | |
| 74 Public method to check for the presence of child items. | |
| 75 | |
| 76 We always return True for normal items in order to do lazy | |
| 77 population of the tree. | |
| 78 | |
| 79 @param parent index of parent item (QModelIndex) | |
| 80 @return flag indicating the presence of child items (boolean) | |
| 81 """ | |
| 82 sindex = self.mapToSource(parent) | |
| 83 return self.sourceModel().hasChildren(sindex) | |
| 84 | |
| 85 def filterAcceptsRow(self, source_row, source_parent): | |
| 86 """ | |
| 87 Protected method to filter rows. | |
| 88 | |
| 89 It implements a filter to suppress the display of non public | |
| 90 classes, methods and attributes. | |
| 91 | |
| 92 @param source_row row number (in the source model) of item (integer) | |
| 93 @param source_parent index of parent item (in the source model) | |
| 94 of item (QModelIndex) | |
| 95 @return flag indicating, if the item should be shown (boolean) | |
| 96 """ | |
| 97 if self.hideNonPublic: | |
| 98 sindex = self.sourceModel().index(source_row, 0, source_parent) | |
| 99 return self.sourceModel().item(sindex).isPublic() | |
| 100 else: | |
| 101 return True | |
| 102 | |
| 103 def preferencesChanged(self): | |
| 104 """ | |
| 105 Public slot called to handle a change of the preferences settings. | |
| 106 """ | |
| 107 hideNonPublic = Preferences.getUI("BrowsersHideNonPublic") | |
| 108 if self.hideNonPublic != hideNonPublic: | |
| 109 self.hideNonPublic = hideNonPublic | |
| 110 self.filterChanged() |
