Mercurial Repositories > eric / file comparison
comparison: Helpviewer/Download/DownloadModel.py
Helpviewer/Download/DownloadModel.py
- changeset 668
- b0061a6f7484
- child 791
- 9ec2ac20e54e
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| 666:fdd568d3533d | 668:b0061a6f7484 |
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| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2010 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing the download model. | |
| 8 """ | |
| 9 | |
| 10 from PyQt4.QtCore import Qt, QAbstractListModel, QModelIndex, QMimeData, QUrl | |
| 11 | |
| 12 class DownloadModel(QAbstractListModel): | |
| 13 """ | |
| 14 Class implementing the download model. | |
| 15 """ | |
| 16 def __init__(self, manager, parent = None): | |
| 17 """ | |
| 18 Constructor | |
| 19 | |
| 20 @param manager reference to the download manager (DownloadManager) | |
| 21 @param parent reference to the parent object (QObject) | |
| 22 """ | |
| 23 QAbstractListModel.__init__(self, parent) | |
| 24 | |
| 25 self.__manager = manager | |
| 26 | |
| 27 def data(self, index, role): | |
| 28 """ | |
| 29 Public method to get data from the model. | |
| 30 | |
| 31 @param index index to get data for (QModelIndex) | |
| 32 @param role role of the data to retrieve (integer) | |
| 33 @return requested data | |
| 34 """ | |
| 35 if index.row() < 0 or index.row() >= self.rowCount(index.parent()): | |
| 36 return None | |
| 37 | |
| 38 if role == Qt.ToolTipRole: | |
| 39 if self.__manager.downloads()[index.row()].downloadedSuccessfully(): | |
| 40 return self.__manager.downloads()[index.row()].getInfoData() | |
| 41 | |
| 42 return None | |
| 43 | |
| 44 def rowCount(self, parent = QModelIndex()): | |
| 45 """ | |
| 46 Public method to get the number of rows of the model. | |
| 47 | |
| 48 @param parent parent index (QModelIndex) | |
| 49 @return number of rows (integer) | |
| 50 """ | |
| 51 if parent.isValid(): | |
| 52 return 0 | |
| 53 else: | |
| 54 return self.__manager.count() | |
| 55 | |
| 56 def removeRows(self, row, count, parent = QModelIndex()): | |
| 57 """ | |
| 58 Public method to remove bookmarks from the model. | |
| 59 | |
| 60 @param row row of the first bookmark to remove (integer) | |
| 61 @param count number of bookmarks to remove (integer) | |
| 62 @param index of the parent bookmark node (QModelIndex) | |
| 63 @return flag indicating successful removal (boolean) | |
| 64 """ | |
| 65 if parent.isValid(): | |
| 66 return False | |
| 67 | |
| 68 if row < 0 or count <= 0 or row + count > self.rowCount(parent): | |
| 69 return False | |
| 70 | |
| 71 lastRow = row + count - 1 | |
| 72 for i in range(lastRow, row - 1, -1): | |
| 73 if not self.__manager.downloads()[i].downloading(): | |
| 74 self.beginRemoveRows(parent, i, i) | |
| 75 del self.__manager.downloads()[i] | |
| 76 self.endRemoveRows() | |
| 77 self.__manager.changeOccurred() | |
| 78 return True | |
| 79 | |
| 80 def flags(self, index): | |
| 81 """ | |
| 82 Public method to get flags for an item. | |
| 83 | |
| 84 @param index index of the node cell (QModelIndex) | |
| 85 @return flags (Qt.ItemFlags) | |
| 86 """ | |
| 87 if index.row() < 0 or index.row() >= self.rowCount(index.parent()): | |
| 88 return Qt.NoItemFlags | |
| 89 | |
| 90 defaultFlags = QAbstractListModel.flags(self, index) | |
| 91 | |
| 92 itm = self.__manager.downloads()[index.row()] | |
| 93 if itm.downloadedSuccessfully(): | |
| 94 return defaultFlags | Qt.ItemIsDragEnabled | |
| 95 | |
| 96 return defaultFlags | |
| 97 | |
| 98 def mimeData(self, indexes): | |
| 99 """ | |
| 100 Public method to return the mime data. | |
| 101 | |
| 102 @param indexes list of indexes (QModelIndexList) | |
| 103 @return mime data (QMimeData) | |
| 104 """ | |
| 105 mimeData = QMimeData() | |
| 106 urls = [] | |
| 107 for index in indexes: | |
| 108 if index.isValid(): | |
| 109 itm = self.__manager.downloads()[index.row()] | |
| 110 urls.append(QUrl.fromLocalFile(itm.absoluteFilePath())) | |
| 111 mimeData.setUrls(urls) | |
| 112 return mimeData |
