eric: eric6/UI/BrowserModel.py@b2c315bcb1c0 (annotated)

 # -*- coding: utf-8 -*-
 # Copyright (c) 2006 - 2020 Detlev Offenbach <detlev@die-offenbachs.de>
 #
 """
 Module implementing the browser model.
 """
 import os
 import fnmatch
 import json
 from PyQt5.QtCore import (
     QDir, QModelIndex, QAbstractItemModel, QFileSystemWatcher, Qt, QProcess,
     QCoreApplication
 )
 from PyQt5.QtGui import QImageReader, QFont
 from PyQt5.QtWidgets import QApplication
 import UI.PixmapCache
 import Preferences
 import Utilities
 BrowserItemRoot = 0
 BrowserItemDirectory = 1
 BrowserItemSysPath = 2
 BrowserItemFile = 3
 BrowserItemClass = 4
 BrowserItemMethod = 5
 BrowserItemAttributes = 6
 BrowserItemAttribute = 7
 BrowserItemCoding = 8
 BrowserItemImports = 9
 BrowserItemImport = 10
 class BrowserModel(QAbstractItemModel):
     """
     Class implementing the browser model.
     """
     def __init__(self, parent=None, nopopulate=False):
         """
         Constructor
         @param parent reference to parent object (QObject)
         @keyparam nopopulate flag indicating to not populate the model
             (boolean)
         """
         super(BrowserModel, self).__init__(parent)
         self.progDir = None
         self.__sysPathInterpreter = ""
         self.__sysPathItem = None
         if not nopopulate:
             self.watchedItems = {}
             self.watchedFileItems = {}
             self.watcher = QFileSystemWatcher(self)
             self.watcher.directoryChanged.connect(self.directoryChanged)
             self.watcher.fileChanged.connect(self.fileChanged)
             rootData = QCoreApplication.translate("BrowserModel", "Name")
             self.rootItem = BrowserItem(None, rootData)
             self.__populateModel()
     def columnCount(self, parent=None):
         """
         Public method to get the number of columns.
         @param parent index of parent item (QModelIndex)
         @return number of columns (integer)
         """
         if parent is None:
             parent = QModelIndex()
         if parent.isValid():
             item = parent.internalPointer()
         else:
             item = self.rootItem
         return item.columnCount() + 1
     def data(self, index, role):
         """
         Public method to get data of an item.
         @param index index of the data to retrieve (QModelIndex)
         @param role role of data (Qt.ItemDataRole)
         @return requested data
         """
         if not index.isValid():
             return None
         if role == Qt.DisplayRole:
             item = index.internalPointer()
             if index.column() < item.columnCount():
                 return item.data(index.column())
             elif (
                 index.column() == item.columnCount() and
                 index.column() < self.columnCount(self.parent(index))
             ):
                 # This is for the case where an item under a multi-column
                 # parent doesn't have a value for all the columns
                 return ""
         elif role == Qt.DecorationRole:
             if index.column() == 0:
                 return index.internalPointer().getIcon()
         elif role == Qt.FontRole:
             item = index.internalPointer()
             if item.isSymlink():
                 font = QFont(QApplication.font("QTreeView"))
                 font.setItalic(True)
                 return font
         return None
     def flags(self, index):
         """
         Public method to get the item flags.
         @param index index of the data to retrieve (QModelIndex)
         @return requested flags (Qt.ItemFlags)
         """
         if not index.isValid():
             return Qt.ItemIsEnabled
         return Qt.ItemIsEnabled | Qt.ItemIsSelectable
     def headerData(self, section, orientation, role=Qt.DisplayRole):
         """
         Public method to get the header data.
         @param section number of section to get data for (integer)
         @param orientation header orientation (Qt.Orientation)
         @param role role of data (Qt.ItemDataRole)
         @return requested header data
         """
         if orientation == Qt.Horizontal and role == Qt.DisplayRole:
             if section >= self.rootItem.columnCount():
                 return ""
             else:
                 return self.rootItem.data(section)
         return None
     def index(self, row, column, parent=None):
         """
         Public method to create an index.
         @param row row number of the new index (integer)
         @param column column number of the new index (integer)
         @param parent index of parent item (QModelIndex)
         @return index object (QModelIndex)
         """
         if parent is None:
             parent = QModelIndex()
         # The model/view framework considers negative values out-of-bounds,
         # however in python they work when indexing into lists. So make sure
         # we return an invalid index for out-of-bounds row/col
         if (
             row < 0 or
             column < 0 or
             row >= self.rowCount(parent) or
             column >= self.columnCount(parent)
         ):
             return QModelIndex()
         if not parent.isValid():
             parentItem = self.rootItem
         else:
             parentItem = parent.internalPointer()
         try:
             if not parentItem.isPopulated():
                 self.populateItem(parentItem)
             childItem = parentItem.child(row)
         except IndexError:
             childItem = None
         if childItem:
             return self.createIndex(row, column, childItem)
         else:
             return QModelIndex()
     def parent(self, index):
         """
         Public method to get the index of the parent object.
         @param index index of the item (QModelIndex)
         @return index of parent item (QModelIndex)
         """
         if not index.isValid():
             return QModelIndex()
         childItem = index.internalPointer()
         parentItem = childItem.parent()
         if parentItem is None or parentItem == self.rootItem:
             return QModelIndex()
         return self.createIndex(parentItem.row(), 0, parentItem)
     def rowCount(self, parent=None):
         """
         Public method to get the number of rows.
         @param parent index of parent item (QModelIndex)
         @return number of rows (integer)
         """
         if parent is None:
             parent = QModelIndex()
         # Only the first column should have children
         if parent.column() > 0:
             return 0
         if not parent.isValid():
             parentItem = self.rootItem
         else:
             parentItem = parent.internalPointer()
             if not parentItem.isPopulated():    # lazy population
                 self.populateItem(parentItem)
         return parentItem.childCount()
     def hasChildren(self, parent=None):
         """
         Public method to check for the presence of child items.
         We always return True for normal items in order to do lazy
         population of the tree.
         @param parent index of parent item (QModelIndex)
         @return flag indicating the presence of child items (boolean)
         """
         if parent is None:
             parent = QModelIndex()
         # Only the first column should have children
         if parent.column() > 0:
             return 0
         if not parent.isValid():
             return self.rootItem.childCount() > 0
         if parent.internalPointer().isLazyPopulated():
             return True
         else:
             return parent.internalPointer().childCount() > 0
     def clear(self):
         """
         Public method to clear the model.
         """
         self.beginResetModel()
         self.rootItem.removeChildren()
         self.endResetModel()
     def item(self, index):
         """
         Public method to get a reference to an item.
         @param index index of the data to retrieve (QModelIndex)
         @return requested item reference (BrowserItem)
         """
         if not index.isValid():
             return None
         return index.internalPointer()
     def _addWatchedItem(self, itm):
         """
         Protected method to watch an item.
         @param itm item to be watched (BrowserDirectoryItem)
         """
         if isinstance(itm, BrowserDirectoryItem):
             dirName = itm.dirName()
             if (
                 dirName != "" and
                 not dirName.startswith("//") and
                 not dirName.startswith("\\\\")
             ):
                 if dirName not in self.watcher.directories():
                     self.watcher.addPath(dirName)
                 if dirName in self.watchedItems:
                     if itm not in self.watchedItems[dirName]:
                         self.watchedItems[dirName].append(itm)
                 else:
                     self.watchedItems[dirName] = [itm]
     def _removeWatchedItem(self, itm):
         """
         Protected method to remove a watched item.
         @param itm item to be removed (BrowserDirectoryItem)
         """
         if isinstance(itm, BrowserDirectoryItem):
             dirName = itm.dirName()
             if dirName in self.watchedItems:
                 if itm in self.watchedItems[dirName]:
                     self.watchedItems[dirName].remove(itm)
                 if len(self.watchedItems[dirName]) == 0:
                     del self.watchedItems[dirName]
                     self.watcher.removePath(dirName)
     def directoryChanged(self, path):
         """
         Public slot to handle the directoryChanged signal of the watcher.
         @param path path of the directory (string)
         """
         if path not in self.watchedItems:
             # just ignore the situation we don't have a reference to the item
             return
         if Preferences.getUI("BrowsersListHiddenFiles"):
             dirFilter = QDir.Filters(
                 QDir.AllEntries | QDir.Hidden | QDir.NoDotAndDotDot)
         else:
             dirFilter = QDir.Filters(
                 QDir.AllEntries | QDir.NoDot | QDir.NoDotDot)
         for itm in self.watchedItems[path]:
             oldCnt = itm.childCount()
             qdir = QDir(itm.dirName())
             entryInfoList = qdir.entryInfoList(dirFilter)
             # step 1: check for new entries
             children = itm.children()
             for f in entryInfoList:
                 fpath = Utilities.toNativeSeparators(f.absoluteFilePath())
                 childFound = False
                 for child in children:
                     if child.name() == fpath:
                         childFound = True
                         children.remove(child)
                         break
                 if childFound:
                     continue
                 cnt = itm.childCount()
                 self.beginInsertRows(
                     self.createIndex(itm.row(), 0, itm), cnt, cnt)
                 if f.isDir():
                     node = BrowserDirectoryItem(
                         itm,
                         Utilities.toNativeSeparators(f.absoluteFilePath()),
                         False)
                 else:
                     node = BrowserFileItem(
                         itm,
                         Utilities.toNativeSeparators(f.absoluteFilePath()))
                 self._addItem(node, itm)
                 self.endInsertRows()
             # step 2: check for removed entries
             if len(entryInfoList) != itm.childCount():
                 for row in range(oldCnt - 1, -1, -1):
                     child = itm.child(row)
                     childname = Utilities.fromNativeSeparators(child.name())
                     entryFound = False
                     for f in entryInfoList:
                         if f.absoluteFilePath() == childname:
                             entryFound = True
                             entryInfoList.remove(f)
                             break
                     if entryFound:
                         continue
                     self._removeWatchedItem(child)
                     self.beginRemoveRows(
                         self.createIndex(itm.row(), 0, itm), row, row)
                     itm.removeChild(child)
                     self.endRemoveRows()
     def __populateModel(self):
         """
         Private method to populate the browser model.
         """
         self.toplevelDirs = []
         tdp = Preferences.Prefs.settings.value('BrowserModel/ToplevelDirs')
         if tdp:
             self.toplevelDirs = tdp
         else:
             self.toplevelDirs.append(
                 Utilities.toNativeSeparators(QDir.homePath()))
             for d in QDir.drives():
                 self.toplevelDirs.append(Utilities.toNativeSeparators(
                     d.absoluteFilePath()))
         for d in self.toplevelDirs:
             itm = BrowserDirectoryItem(self.rootItem, d)
             self._addItem(itm, self.rootItem)
     def interpreterChanged(self, interpreter):
         """
         Public method to handle a change of the debug client's interpreter.
         @param interpreter interpreter of the debug client (string)
         """
         if interpreter and "python" in interpreter.lower():
             if interpreter.endswith("w.exe"):
                 interpreter = interpreter.replace("w.exe", ".exe")
             if self.__sysPathInterpreter != interpreter:
                 self.__sysPathInterpreter = interpreter
                 # step 1: remove sys.path entry
                 if self.__sysPathItem is not None:
                     self.beginRemoveRows(
                         QModelIndex(), self.__sysPathItem.row(),
                         self.__sysPathItem.row())
                     self.rootItem.removeChild(self.__sysPathItem)
                     self.endRemoveRows()
                     self.__sysPathItem = None
                 if self.__sysPathInterpreter:
                     # step 2: add a new one
                     self.__sysPathItem = BrowserSysPathItem(self.rootItem)
                     self.addItem(self.__sysPathItem)
         else:
             # remove sys.path entry
             if self.__sysPathItem is not None:
                 self.beginRemoveRows(
                     QModelIndex(), self.__sysPathItem.row(),
                     self.__sysPathItem.row())
                 self.rootItem.removeChild(self.__sysPathItem)
                 self.endRemoveRows()
                 self.__sysPathItem = None
             self.__sysPathInterpreter = ""
     def programChange(self, dirname):
         """
         Public method to change the entry for the directory of file being
         debugged.
         @param dirname name of the directory containing the file (string)
         """
         if self.progDir:
             if dirname == self.progDir.dirName():
                 return
             # remove old entry
             self._removeWatchedItem(self.progDir)
             self.beginRemoveRows(
                 QModelIndex(), self.progDir.row(), self.progDir.row())
             self.rootItem.removeChild(self.progDir)
             self.endRemoveRows()
             self.progDir = None
         itm = BrowserDirectoryItem(self.rootItem, dirname)
         self.addItem(itm)
         self.progDir = itm
     def addTopLevelDir(self, dirname):
         """
         Public method to add a new toplevel directory.
         @param dirname name of the new toplevel directory (string)
         """
         if dirname not in self.toplevelDirs:
             itm = BrowserDirectoryItem(self.rootItem, dirname)
             self.addItem(itm)
             self.toplevelDirs.append(itm.dirName())
     def removeToplevelDir(self, index):
         """
         Public method to remove a toplevel directory.
         @param index index of the toplevel directory to be removed
             (QModelIndex)
         """
         if not index.isValid():
             return
         item = index.internalPointer()
         self.beginRemoveRows(index.parent(), index.row(), index.row())
         self.rootItem.removeChild(item)
         self.endRemoveRows()
         self.toplevelDirs.remove(item.dirName())
         self._removeWatchedItem(item)
     def saveToplevelDirs(self):
         """
         Public slot to save the toplevel directories.
         """
         Preferences.Prefs.settings.setValue(
             'BrowserModel/ToplevelDirs', self.toplevelDirs)
     def _addItem(self, itm, parentItem):
         """
         Protected slot to add an item.
         @param itm reference to item to add (BrowserItem)
         @param parentItem reference to item to add to (BrowserItem)
         """
         parentItem.appendChild(itm)
     def addItem(self, itm, parent=None):
         """
         Public slot to add an item.
         @param itm item to add (BrowserItem)
         @param parent index of parent item (QModelIndex)
         """
         if parent is None:
             parent = QModelIndex()
         if not parent.isValid():
             parentItem = self.rootItem
         else:
             parentItem = parent.internalPointer()
         cnt = parentItem.childCount()
         self.beginInsertRows(parent, cnt, cnt)
         self._addItem(itm, parentItem)
         self.endInsertRows()
     def populateItem(self, parentItem, repopulate=False):
         """
         Public method to populate an item's subtree.
         @param parentItem reference to the item to be populated
         @param repopulate flag indicating a repopulation (boolean)
         """
         if parentItem.type() == BrowserItemDirectory:
             self.populateDirectoryItem(parentItem, repopulate)
         elif parentItem.type() == BrowserItemSysPath:
             self.populateSysPathItem(parentItem, repopulate)
         elif parentItem.type() == BrowserItemFile:
             self.populateFileItem(parentItem, repopulate)
         elif parentItem.type() == BrowserItemClass:
             self.populateClassItem(parentItem, repopulate)
         elif parentItem.type() == BrowserItemMethod:
             self.populateMethodItem(parentItem, repopulate)
         elif parentItem.type() == BrowserItemAttributes:
             self.populateClassAttributesItem(parentItem, repopulate)
     def populateDirectoryItem(self, parentItem, repopulate=False):
         """
         Public method to populate a directory item's subtree.
         @param parentItem reference to the directory item to be populated
         @param repopulate flag indicating a repopulation (boolean)
         """
         self._addWatchedItem(parentItem)
         qdir = QDir(parentItem.dirName())
         if Preferences.getUI("BrowsersListHiddenFiles"):
             dirFilter = QDir.Filters(
                 QDir.AllEntries | QDir.Hidden | QDir.NoDotAndDotDot)
         else:
             dirFilter = QDir.Filters(
                 QDir.AllEntries | QDir.NoDot | QDir.NoDotDot)
         entryInfoList = qdir.entryInfoList(dirFilter)
         if len(entryInfoList) > 0:
             if repopulate:
                 self.beginInsertRows(
                     self.createIndex(parentItem.row(), 0, parentItem),
 , len(entryInfoList) - 1)
             for f in entryInfoList:
                 if f.isDir():
                     node = BrowserDirectoryItem(
                         parentItem,
                         Utilities.toNativeSeparators(f.absoluteFilePath()),
                         False)
                 else:
                     fileFilters = Preferences.getUI(
                         "BrowsersFileFilters").split(";")
                     if fileFilters:
                         fn = f.fileName()
                         if any(fnmatch.fnmatch(fn, ff.strip())
                                for ff in fileFilters):
                             continue
                     node = BrowserFileItem(
                         parentItem,
                         Utilities.toNativeSeparators(f.absoluteFilePath()))
                 self._addItem(node, parentItem)
             if repopulate:
                 self.endInsertRows()
     def populateSysPathItem(self, parentItem, repopulate=False):
         """
         Public method to populate a sys.path item's subtree.
         @param parentItem reference to the sys.path item to be populated
         @param repopulate flag indicating a repopulation (boolean)
         """
         if self.__sysPathInterpreter:
             script = "import sys, json; print(json.dumps(sys.path))"
             proc = QProcess()
             proc.start(self.__sysPathInterpreter, ["-c", script])
             finished = proc.waitForFinished(3000)
             if finished:
                 procOutput = str(proc.readAllStandardOutput(),
                                  Preferences.getSystem("IOEncoding"),
                                  'replace')
                 syspath = [p for p in json.loads(procOutput) if p]
                 if len(syspath) > 0:
                     if repopulate:
                         self.beginInsertRows(
                             self.createIndex(parentItem.row(), 0, parentItem),
 , len(syspath) - 1)
                     for p in syspath:
                         if os.path.isdir(p):
                             node = BrowserDirectoryItem(parentItem, p)
                         else:
                             node = BrowserFileItem(parentItem, p)
                         self._addItem(node, parentItem)
                     if repopulate:
                         self.endInsertRows()
             else:
                 proc.kill()
     def populateFileItem(self, parentItem, repopulate=False):
         """
         Public method to populate a file item's subtree.
         @param parentItem reference to the file item to be populated
         @param repopulate flag indicating a repopulation (boolean)
         """
         import Utilities.ClassBrowsers
         moduleName = parentItem.moduleName()
         fileName = parentItem.fileName()
         try:
             dictionary = Utilities.ClassBrowsers.readmodule(
                 moduleName, [parentItem.dirName()],
                 parentItem.isPython3File())
         except ImportError:
             return
         keys = list(dictionary.keys())
         if len(keys) > 0:
             if repopulate:
                 self.beginInsertRows(
                     self.createIndex(parentItem.row(), 0, parentItem),
 , len(keys) - 1)
             for key in keys:
                 if key.startswith("@@"):
                     # special treatment done later
                     continue
                 cl = dictionary[key]
                 try:
                     if cl.module == moduleName:
                         node = BrowserClassItem(parentItem, cl, fileName)
                         self._addItem(node, parentItem)
                 except AttributeError:
                     pass
             if "@@Coding@@" in keys:
                 node = BrowserCodingItem(
                     parentItem,
                     QCoreApplication.translate("BrowserModel", "Coding: {0}")
                     .format(dictionary["@@Coding@@"].coding),
                     dictionary["@@Coding@@"].linenumber)
                 self._addItem(node, parentItem)
             if "@@Globals@@" in keys:
                 node = BrowserGlobalsItem(
                     parentItem,
                     dictionary["@@Globals@@"].globals,
                     QCoreApplication.translate("BrowserModel", "Globals"))
                 self._addItem(node, parentItem)
             if "@@Import@@" in keys or "@@ImportFrom@@" in keys:
                 node = BrowserImportsItem(
                     parentItem,
                     QCoreApplication.translate("BrowserModel", "Imports"))
                 self._addItem(node, parentItem)
                 if "@@Import@@" in keys:
                     for importedModule in (
                         dictionary["@@Import@@"].getImports().values()
                     ):
                         m_node = BrowserImportItem(
                             node,
                             importedModule.importedModuleName,
                             importedModule.file,
                             importedModule.linenos)
                         self._addItem(m_node, node)
                         for importedName, linenos in (
                             importedModule.importedNames.items()
                         ):
                             mn_node = BrowserImportItem(
                                 m_node,
                                 importedName,
                                 importedModule.file,
                                 linenos,
                                 isModule=False)
                             self._addItem(mn_node, m_node)
             if repopulate:
                 self.endInsertRows()
         parentItem._populated = True
         if (
             parentItem.type_ == BrowserItemFile and
             fileName not in self.watchedFileItems
         ):
             # watch the file only in the file browser not the project viewer
             self.watcher.addPath(fileName)
             self.watchedFileItems[fileName] = parentItem
     def repopulateFileItem(self, itm):
         """
         Public method to repopulate a file item.
         @param itm reference to the item to be repopulated
         @type BrowserFileItem
         """
         if isinstance(itm, BrowserFileItem) and itm.isLazyPopulated():
             if not itm.isPopulated():
                 # item is not populated yet, nothing to do
                 return
             if itm.childCount():
                 index = self.createIndex(itm.row(), 0, itm)
                 self.beginRemoveRows(index, 0, itm.childCount() - 1)
                 itm.removeChildren()
                 self.endRemoveRows()
             self.populateFileItem(itm, True)
     def fileChanged(self, fileName):
         """
         Public method to react upon file changes.
         @param fileName path of the changed file
         @type str
         """
         if fileName in self.watchedFileItems:
             if os.path.exists(fileName):
                 # the file was changed
                 self.repopulateFileItem(self.watchedFileItems[fileName])
             else:
                 # the file does not exist anymore
                 del self.watchedFileItems[fileName]
     def populateClassItem(self, parentItem, repopulate=False):
         """
         Public method to populate a class item's subtree.
         @param parentItem reference to the class item to be populated
         @param repopulate flag indicating a repopulation (boolean)
         """
         cl = parentItem.classObject()
         file_ = parentItem.fileName()
         if cl is None:
             return
         # build sorted list of names
         keys = []
         for name in list(cl.classes.keys()):
             keys.append((name, 'c'))
         for name in list(cl.methods.keys()):
             keys.append((name, 'm'))
         if len(cl.attributes):
             node = BrowserClassAttributesItem(
                 parentItem, cl.attributes,
                 QCoreApplication.translate("BrowserModel", "Attributes"))
             if repopulate:
                 self.addItem(
                     node, self.createIndex(parentItem.row(), 0, parentItem))
             else:
                 self._addItem(node, parentItem)
         if len(cl.globals):
             node = BrowserClassAttributesItem(
                 parentItem, cl.globals,
                 QCoreApplication.translate("BrowserModel", "Class Attributes"),
                 True)
             if repopulate:
                 self.addItem(
                     node, self.createIndex(parentItem.row(), 0, parentItem))
             else:
                 self._addItem(node, parentItem)
         if len(keys) > 0:
             if repopulate:
                 self.beginInsertRows(
                     self.createIndex(parentItem.row(), 0, parentItem),
 , len(keys) - 1)
             for key, kind in keys:
                 if kind == 'c':
                     node = BrowserClassItem(parentItem, cl.classes[key], file_)
                 elif kind == 'm':
                     node = BrowserMethodItem(parentItem, cl.methods[key],
                                              file_)
                 self._addItem(node, parentItem)
             if repopulate:
                 self.endInsertRows()
     def populateMethodItem(self, parentItem, repopulate=False):
         """
         Public method to populate a method item's subtree.
         @param parentItem reference to the method item to be populated
         @param repopulate flag indicating a repopulation (boolean)
         """
         fn = parentItem.functionObject()
         file_ = parentItem.fileName()
         if fn is None:
             return
         # build sorted list of names
         keys = []
         for name in list(fn.classes.keys()):
             keys.append((name, 'c'))
         for name in list(fn.methods.keys()):
             keys.append((name, 'm'))
         if len(keys) > 0:
             if repopulate:
                 self.beginInsertRows(
                     self.createIndex(parentItem.row(), 0, parentItem),
 , len(keys) - 1)
             for key, kind in keys:
                 if kind == 'c':
                     node = BrowserClassItem(parentItem, fn.classes[key], file_)
                 elif kind == 'm':
                     node = BrowserMethodItem(parentItem, fn.methods[key],
                                              file_)
                 self._addItem(node, parentItem)
             if repopulate:
                 self.endInsertRows()
     def populateClassAttributesItem(self, parentItem, repopulate=False):
         """
         Public method to populate a class attributes item's subtree.
         @param parentItem reference to the class attributes item to be
             populated
         @param repopulate flag indicating a repopulation (boolean)
         """
         classAttributes = parentItem.isClassAttributes()
         attributes = parentItem.attributes()
         if not attributes:
             return
         keys = list(attributes.keys())
         if len(keys) > 0:
             if repopulate:
                 self.beginInsertRows(
                     self.createIndex(parentItem.row(), 0, parentItem),
 , len(keys) - 1)
             for key in keys:
                 node = BrowserClassAttributeItem(parentItem, attributes[key],
                                                  classAttributes)
                 self._addItem(node, parentItem)
             if repopulate:
                 self.endInsertRows()
 class BrowserItem(object):
     """
     Class implementing the data structure for browser items.
     """
     def __init__(self, parent, data):
         """
         Constructor
         @param parent reference to the parent item
         @param data single data of the item
         """
         self.childItems = []
         self.parentItem = parent
         self.itemData = [data]
         self.type_ = BrowserItemRoot
         self.icon = UI.PixmapCache.getIcon("empty")
         self._populated = True
         self._lazyPopulation = False
         self.symlink = False
     def appendChild(self, child):
         """
         Public method to add a child to this item.
         @param child reference to the child item to add (BrowserItem)
         """
         self.childItems.append(child)
         self._populated = True
     def removeChild(self, child):
         """
         Public method to remove a child.
         @param child reference to the child to remove (BrowserItem)
         """
         self.childItems.remove(child)
     def removeChildren(self):
         """
         Public method to remove all children.
         """
         self.childItems = []
     def child(self, row):
         """
         Public method to get a child id.
         @param row number of child to get the id of (integer)
         @return reference to the child item (BrowserItem)
         """
         return self.childItems[row]
     def children(self):
         """
         Public method to get the ids of all child items.
         @return references to all child items (list of BrowserItem)
         """
         return self.childItems[:]
     def childCount(self):
         """
         Public method to get the number of available child items.
         @return number of child items (integer)
         """
         return len(self.childItems)
     def columnCount(self):
         """
         Public method to get the number of available data items.
         @return number of data items (integer)
         """
         return len(self.itemData)
     def data(self, column):
         """
         Public method to get a specific data item.
         @param column number of the requested data item (integer)
         @return stored data item
         """
         try:
             return self.itemData[column]
         except IndexError:
             return ""
     def parent(self):
         """
         Public method to get the reference to the parent item.
         @return reference to the parent item
         """
         return self.parentItem
     def row(self):
         """
         Public method to get the row number of this item.
         @return row number (integer)
         """
         try:
             return self.parentItem.childItems.index(self)
         except ValueError:
             return 0
     def type(self):
         """
         Public method to get the item type.
         @return type of the item
         """
         return self.type_
     def isPublic(self):
         """
         Public method returning the public visibility status.
         @return flag indicating public visibility (boolean)
         """
         return True
     def getIcon(self):
         """
         Public method to get the items icon.
         @return the icon (QIcon)
         """
         return self.icon
     def isPopulated(self):
         """
         Public method to chek, if this item is populated.
         @return population status (boolean)
         """
         return self._populated
     def isLazyPopulated(self):
         """
         Public method to check, if this item should be populated lazyly.
         @return lazy population flag (boolean)
         """
         return self._lazyPopulation
     def lessThan(self, other, column, order):
         """
         Public method to check, if the item is less than the other one.
         @param other reference to item to compare against (BrowserItem)
         @param column column number to use for the comparison (integer)
         @param order sort order (Qt.SortOrder) (for special sorting)
         @return true, if this item is less than other (boolean)
         """
         try:
             return self.itemData[column] < other.itemData[column]
         except IndexError:
             return False
     def isSymlink(self):
         """
         Public method to check, if the items is a symbolic link.
         @return flag indicating a symbolic link (boolean)
         """
         return self.symlink
 class BrowserDirectoryItem(BrowserItem):
     """
     Class implementing the data structure for browser directory items.
     """
     def __init__(self, parent, dinfo, full=True):
         """
         Constructor
         @param parent parent item
         @param dinfo dinfo is the string for the directory (string)
         @param full flag indicating full pathname should be displayed (boolean)
         """
         self._dirName = os.path.abspath(dinfo)
         if full:
             dn = self._dirName
         else:
             dn = os.path.basename(self._dirName)
         BrowserItem.__init__(self, parent, dn)
         self.type_ = BrowserItemDirectory
         if (
             not Utilities.isDrive(self._dirName) and
             os.path.lexists(self._dirName) and
             os.path.islink(self._dirName)
         ):
             self.symlink = True
             self.icon = UI.PixmapCache.getSymlinkIcon("dirClosed")
         else:
             self.icon = UI.PixmapCache.getIcon("dirClosed")
         self._populated = False
         self._lazyPopulation = True
     def setName(self, dinfo, full=True):
         """
         Public method to set the directory name.
         @param dinfo dinfo is the string for the directory (string)
         @param full flag indicating full pathname should be displayed (boolean)
         """
         self._dirName = os.path.abspath(dinfo)
         if full:
             dn = self._dirName
         else:
             dn = os.path.basename(self._dirName)
         self.itemData[0] = dn
     def dirName(self):
         """
         Public method returning the directory name.
         @return directory name (string)
         """
         return self._dirName
     def name(self):
         """
         Public method to return the name of the item.
         @return name of the item (string)
         """
         return self._dirName
     def lessThan(self, other, column, order):
         """
         Public method to check, if the item is less than the other one.
         @param other reference to item to compare against (BrowserItem)
         @param column column number to use for the comparison (integer)
         @param order sort order (Qt.SortOrder) (for special sorting)
         @return true, if this item is less than other (boolean)
         """
         if issubclass(other.__class__, BrowserFileItem):
             if Preferences.getUI("BrowsersListFoldersFirst"):
                 return order == Qt.AscendingOrder
         return BrowserItem.lessThan(self, other, column, order)
 class BrowserSysPathItem(BrowserItem):
     """
     Class implementing the data structure for browser sys.path items.
     """
     def __init__(self, parent):
         """
         Constructor
         @param parent parent item
         """
         BrowserItem.__init__(self, parent, "sys.path")
         self.type_ = BrowserItemSysPath
         self.icon = UI.PixmapCache.getIcon("filePython")
         self._populated = False
         self._lazyPopulation = True
     def name(self):
         """
         Public method to return the name of the item.
         @return name of the item (string)
         """
         return "sys.path"
 class BrowserFileItem(BrowserItem):
     """
     Class implementing the data structure for browser file items.
     """
     def __init__(self, parent, finfo, full=True, sourceLanguage=""):
         """
         Constructor
         @param parent parent item
         @param finfo the string for the file (string)
         @param full flag indicating full pathname should be displayed (boolean)
         @param sourceLanguage source code language of the project (string)
         """
         BrowserItem.__init__(self, parent, os.path.basename(finfo))
         self.type_ = BrowserItemFile
         self.fileext = os.path.splitext(finfo)[1].lower()
         self._filename = os.path.abspath(finfo)
         self._dirName = os.path.dirname(finfo)
         self.sourceLanguage = sourceLanguage
 de9c2efb9d02
Started porting eric4 to Python3

Detlev Offenbach <detlev@die-offen

Mercurial Repositories > eric / annotate

eric6/UI/BrowserModel.py@b2c315bcb1c0 (annotated)

eric6/UI/BrowserModel.py