Veronica K. B. Olsen
786 lines
29 KiB
Python
786 lines
29 KiB
Python
# -*- coding: utf-8 -*-
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"""novelWriter GUI Document Tree
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novelWriter – GUI Document Tree
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=================================
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Class holding the left side document tree view
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File History:
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Created: 2018-09-29 [0.0.1]
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This file is a part of novelWriter
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Copyright 2020, Veronica Berglyd Olsen
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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"""
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import logging
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import nw
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from PyQt5.QtCore import Qt, QSize
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from PyQt5.QtGui import QFont, QColor, QIcon
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from PyQt5.QtWidgets import (
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qApp, QTreeWidget, QTreeWidgetItem, QAbstractItemView, QMessageBox,
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QHeaderView
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)
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from nw.core import NWDoc
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from nw.constants import (
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nwLabels, nwItemType, nwItemClass, nwItemLayout, nwAlert, nwUnicode
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)
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logger = logging.getLogger(__name__)
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class GuiProjectTree(QTreeWidget):
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C_NAME = 0
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C_COUNT = 1
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C_EXPORT = 2
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C_FLAGS = 3
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def __init__(self, theParent, theProject):
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QTreeWidget.__init__(self, theParent)
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logger.debug("Initialising GuiProjectTree ...")
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self.mainConf = nw.CONFIG
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self.theParent = theParent
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self.theTheme = theParent.theTheme
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self.theProject = theProject
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# Tree Settings
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self.theMap = None
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self.orphRoot = None
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self.clearTree()
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# Build GUI
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iPx = self.theTheme.textIconSize
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self.setIconSize(QSize(iPx, iPx))
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self.setExpandsOnDoubleClick(True)
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self.setIndentation(iPx)
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self.setColumnCount(4)
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self.setHeaderLabels(["Label", "Words", "Inc", "Flags"])
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treeHeadItem = self.headerItem()
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treeHeadItem.setTextAlignment(self.C_COUNT, Qt.AlignRight)
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treeHeadItem.setToolTip(self.C_NAME, "Item label")
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treeHeadItem.setToolTip(self.C_COUNT, "Word count")
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treeHeadItem.setToolTip(self.C_EXPORT, "Include in build")
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treeHeadItem.setToolTip(self.C_FLAGS, "Status, class, and layout flags")
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# Force the font to fix font sizing issues on some platforms
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# like Ubuntu. This must also be set when the rows are added.
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self.setFont(self.theTheme.guiFont)
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treeHeadItem.setFont(self.C_NAME, self.theTheme.guiFont)
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treeHeadItem.setFont(self.C_COUNT,self.theTheme.guiFont)
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treeHeadItem.setFont(self.C_EXPORT, self.theTheme.guiFont)
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treeHeadItem.setFont(self.C_FLAGS, self.theTheme.guiFont)
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# Let the last column stretch, and set the minimum size to the
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# size of the icon as the default Qt font metrics approach fails
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# for some fonts like the Ubuntu font.
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treeHeader = self.header()
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treeHeader.setStretchLastSection(True)
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treeHeader.setMinimumSectionSize(iPx+6)
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# Allow Move by Drag & Drop
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self.setDragEnabled(True)
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self.setDragDropMode(QAbstractItemView.InternalMove)
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# But don't allow drop on root level
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trRoot = self.invisibleRootItem()
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trRoot.setFlags(trRoot.flags() ^ Qt.ItemIsDropEnabled)
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# Set Multiple Selection by CTRL
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# Disabled for now, until the merge files option has been added
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# self.setSelectionMode(QAbstractItemView.ExtendedSelection)
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# self.setSelectionBehavior(QAbstractItemView.SelectRows)
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# Get user's column width preferences for NAME and COUNT
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if len(self.mainConf.treeColWidth) <= 4:
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for colN, colW in enumerate(self.mainConf.treeColWidth):
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self.setColumnWidth(colN, colW)
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# The last column should just auto-scale
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self.resizeColumnToContents(self.C_FLAGS)
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logger.debug("GuiProjectTree initialisation complete")
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# Internal Mapping
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self.makeAlert = self.theParent.makeAlert
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return
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##
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# Class Methods
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##
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def clearTree(self):
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"""Clear the GUI content and the related maps.
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"""
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self.clear()
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self.theMap = {}
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self.orphRoot = None
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return
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def newTreeItem(self, itemType, itemClass):
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"""Add new item to the tree, with a given itemType and
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itemClass, and attach it to the selected handle. Also make sure
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the item is added in a place it can be added, and that other
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meta data is set correctly to ensure a valid project tree.
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"""
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pHandle = self.getSelectedHandle()
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if not self.theParent.hasProject:
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return False
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if itemClass is None and pHandle is not None:
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pItem = self.theProject.projTree[pHandle]
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if pItem is not None:
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itemClass = pItem.itemClass
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if itemClass is None:
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if itemType is not None:
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if itemType == nwItemType.FILE:
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self.makeAlert(
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"Please select a valid location in the tree to add a document.",
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nwAlert.ERROR
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)
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return False
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elif itemType == nwItemType.FOLDER:
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self.makeAlert(
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"Please select a valid location in the tree to add a folder.",
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nwAlert.ERROR
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)
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return False
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self.makeAlert("Failed to add new item.", nwAlert.BUG)
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return False
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logger.verbose("Adding new item of type %s and class %s to handle %s" % (
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itemType.name, itemClass.name, str(pHandle))
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)
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if itemType == nwItemType.ROOT:
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tHandle = self.theProject.newRoot(nwLabels.CLASS_NAME[itemClass], itemClass)
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else:
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# If no parent has been selected, make the new file under
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# the root NOVEL item.
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if pHandle is None:
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pHandle = self.theProject.projTree.findRoot(nwItemClass.NOVEL)
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# If still nothing, give up
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if pHandle is None:
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logger.error("Did not find anywhere to add the item!")
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return False
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# Now check if the selected item is a file, in which case
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# the new file will be a sibling
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pItem = self.theProject.projTree[pHandle]
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if pItem.itemType == nwItemType.FILE:
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pHandle = pItem.parHandle
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# If we again has no home, give up
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if pHandle is None:
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self.makeAlert(
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"Did not find anywhere to add the file or folder!", nwAlert.ERROR
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)
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return False
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if pHandle == self.theProject.projTree.trashRoot():
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self.makeAlert(
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"Cannot add new files or folders to the trash folder.", nwAlert.ERROR
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)
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return False
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# If we're still here, add the file or folder
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if itemType == nwItemType.FILE:
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tHandle = self.theProject.newFile("New File", itemClass, pHandle)
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elif itemType == nwItemType.FOLDER:
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tHandle = self.theProject.newFolder("New Folder", itemClass, pHandle)
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else:
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logger.error("Failed to add new item")
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return False
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# Add the new item to the tree
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self.revealTreeItem(tHandle)
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self.theParent.editItem()
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return True
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def revealTreeItem(self, tHandle):
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"""Reveal a newly added project item in the project tree.
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"""
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nwItem = self.theProject.projTree[tHandle]
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trItem = self._addTreeItem(nwItem)
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pHandle = nwItem.parHandle
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if pHandle is not None and pHandle in self.theMap.keys():
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self.theMap[pHandle].setExpanded(True)
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self.clearSelection()
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trItem.setSelected(True)
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return True
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def moveTreeItem(self, nStep):
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"""Move an item up or down in the tree, but only if the treeView
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has focus. This also applies when the menu is used.
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"""
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if qApp.focusWidget() == self and self.theParent.hasProject:
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tHandle = self.getSelectedHandle()
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tItem = self._getTreeItem(tHandle)
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pItem = tItem.parent()
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if pItem is None:
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tIndex = self.indexOfTopLevelItem(tItem)
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nChild = self.topLevelItemCount()
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nIndex = tIndex + nStep
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if nIndex < 0 or nIndex >= nChild:
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return False
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cItem = self.takeTopLevelItem(tIndex)
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self.insertTopLevelItem(nIndex, cItem)
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else:
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tIndex = pItem.indexOfChild(tItem)
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nChild = pItem.childCount()
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nIndex = tIndex + nStep
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if nIndex < 0 or nIndex >= nChild:
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return False
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cItem = pItem.takeChild(tIndex)
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pItem.insertChild(nIndex, cItem)
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self.clearSelection()
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cItem.setSelected(True)
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self.theProject.setProjectChanged(True)
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else:
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return False
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return True
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def saveTreeOrder(self):
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"""Build a list of the items in the project tree and send them
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to the project class. This syncs up the two versions of the
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project structure, and must be called before any code that
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depends on this order to be up to date.
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"""
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theList = []
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for i in range(self.topLevelItemCount()):
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if self.topLevelItem(i) == self.orphRoot:
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continue
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theList = self._scanChildren(theList, self.topLevelItem(i), i)
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logger.debug("Saving project tree item order")
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self.theProject.setTreeOrder(theList)
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return True
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def getTreeFromHandle(self, tHandle):
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"""Recursively return all the children items starting from a
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given item handle.
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"""
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theList = []
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theItem = self._getTreeItem(tHandle)
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if theItem is not None:
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theList = self._scanChildren(theList, theItem, 0)
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return theList
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def getColumnSizes(self):
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"""Return the column widths for the tree columns.
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"""
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retVals = [
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self.columnWidth(0),
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self.columnWidth(1),
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self.columnWidth(2),
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]
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return retVals
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def emptyTrash(self):
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"""Permanently delete all documents in the Trash folder. This
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function only asks for confirmation once, and calls the regular
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deleteItem function for each document in the Trash folder.
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"""
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trashHandle = self.theProject.projTree.trashRoot()
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logger.debug("Emptying Trash folder")
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if trashHandle is None:
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self.makeAlert("There is no Trash folder.", nwAlert.INFO)
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return False
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theTrash = self.getTreeFromHandle(trashHandle)
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if trashHandle in theTrash:
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theTrash.remove(trashHandle)
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nTrash = len(theTrash)
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if nTrash == 0:
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self.makeAlert("The Trash folder is empty.", nwAlert.INFO)
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return False
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msgBox = QMessageBox()
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msgRes = msgBox.question(
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self, "Empty Trash", "Permanently delete %d file%s from Trash?" % (
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nTrash, "s"*int(nTrash > 1)
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)
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)
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if msgRes != QMessageBox.Yes:
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return False
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logger.verbose("Deleting %d files from Trash" % nTrash)
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for tHandle in self.getTreeFromHandle(trashHandle):
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if tHandle == trashHandle:
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continue
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self.deleteItem(tHandle, True)
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return True
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def deleteItem(self, tHandle=None, alreadyAsked=False):
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"""Delete items from the tree. Note that this does not delete
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the item from the item tree in the project object. However,
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since this is only meta data, there isn't really a need to do
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that to save memory. Items not in the tree are not saved to the
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project file, so a loaded project will be clean anyway.
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"""
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if tHandle is None:
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tHandle = self.getSelectedHandle()
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if tHandle is None:
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return False
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trItemS = self._getTreeItem(tHandle)
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nwItemS = self.theProject.projTree[tHandle]
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if nwItemS is None:
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return False
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if nwItemS.itemType == nwItemType.FILE:
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logger.debug("User requested file %s moved to trash" % tHandle)
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trItemP = trItemS.parent()
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trItemT = self._addTrashRoot()
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if trItemP is None or trItemT is None:
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logger.error("Could not delete item")
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return False
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pHandle = nwItemS.parHandle
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if pHandle is not None and pHandle == self.theProject.projTree.trashRoot():
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# If the file is in the trash folder already, as the
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# user if they want to permanently delete the file.
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doPermanent = False
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if self.mainConf.showGUI and not alreadyAsked:
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msgBox = QMessageBox()
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msgRes = msgBox.question(
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self, "Delete File", "Permanently delete file '%s'?" % nwItemS.itemName
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)
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if msgRes == QMessageBox.Yes:
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doPermanent = True
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else:
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doPermanent = True
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if doPermanent:
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logger.debug("Permanently deleting file with handle %s" % tHandle)
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tIndex = trItemP.indexOfChild(trItemS)
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trItemC = trItemP.takeChild(tIndex)
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if self.theParent.docEditor.theHandle == tHandle:
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self.theParent.closeDocument()
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theDoc = NWDoc(self.theProject, self.theParent)
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theDoc.deleteDocument(tHandle)
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del self.theProject.projTree[tHandle]
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self.theParent.theIndex.deleteHandle(tHandle)
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else:
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# The file is not already in the trash folder, so we
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# move it there.
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if pHandle is None:
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logger.warning("File has no parent item")
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tIndex = trItemP.indexOfChild(trItemS)
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trItemC = trItemP.takeChild(tIndex)
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trItemT.addChild(trItemC)
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nwItemS.setParent(self.theProject.projTree.trashRoot())
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self.theProject.setProjectChanged(True)
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self.theParent.theIndex.deleteHandle(tHandle)
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elif nwItemS.itemType == nwItemType.FOLDER:
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logger.debug("User requested folder %s deleted" % tHandle)
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trItemP = trItemS.parent()
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if trItemP is None:
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logger.error("Could not delete folder")
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return False
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tIndex = trItemP.indexOfChild(trItemS)
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if trItemS.childCount() == 0:
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trItemP.takeChild(tIndex)
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del self.theProject.projTree[tHandle]
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else:
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self.makeAlert("Cannot delete folder. It is not empty.", nwAlert.ERROR)
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return False
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elif nwItemS.itemType == nwItemType.ROOT:
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logger.debug("User requested root folder %s deleted" % tHandle)
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tIndex = self.indexOfTopLevelItem(trItemS)
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if trItemS.childCount() == 0:
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self.takeTopLevelItem(tIndex)
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self.theParent.mainMenu.setAvailableRoot()
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self.theProject.setProjectChanged(True)
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else:
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self.makeAlert("Cannot delete root folder. It is not empty.", nwAlert.ERROR)
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return False
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return True
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def setTreeItemValues(self, tHandle):
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"""Set the name and flag values for a tree item.
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"""
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trItem = self._getTreeItem(tHandle)
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nwItem = self.theProject.projTree[tHandle]
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tName = nwItem.itemName
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tClass = nwItem.itemClass
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tHandle = nwItem.itemHandle
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pHandle = nwItem.parHandle
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expIcon = QIcon()
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||
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stClass = nwLabels.CLASS_FLAG[nwItem.itemClass]
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stLayout = ""
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if nwItem.itemType == nwItemType.FILE:
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stLayout = "."+nwLabels.LAYOUT_FLAG[nwItem.itemLayout]
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if nwItem.isExported:
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expIcon = self.theTheme.getIcon("check")
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else:
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expIcon = self.theTheme.getIcon("cross")
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tStatus = stClass+stLayout
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iStatus = nwItem.itemStatus
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if tClass == nwItemClass.NOVEL:
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iStatus = self.theProject.statusItems.checkEntry(iStatus) # Make sure it's valid
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flagIcon = self.theParent.statusIcons[iStatus]
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else:
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iStatus = self.theProject.importItems.checkEntry(iStatus) # Make sure it's valid
|
||
flagIcon = self.theParent.importIcons[iStatus]
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trItem.setText(self.C_NAME, tName)
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trItem.setIcon(self.C_EXPORT, expIcon)
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trItem.setText(self.C_FLAGS, tStatus)
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trItem.setIcon(self.C_FLAGS, flagIcon)
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||
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return
|
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|
||
def propagateCount(self, tHandle, theCount, nDepth=0):
|
||
"""Recursive function setting the word count for a given item,
|
||
and propagating that count upwards in the tree until reaching a
|
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root item. This function is more efficient than recalculating
|
||
everything each time the word count is updated, but is also
|
||
prone to diverging from the true values if the counts are not
|
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properly reported to the function.
|
||
"""
|
||
tItem = self._getTreeItem(tHandle)
|
||
if tItem is not None:
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||
tItem.setText(self.C_COUNT,str(theCount))
|
||
pItem = tItem.parent()
|
||
if pItem is not None:
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||
pCount = 0
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||
for i in range(pItem.childCount()):
|
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pCount += int(pItem.child(i).text(self.C_COUNT))
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pHandle = pItem.data(self.C_NAME, Qt.UserRole)
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if not nDepth > 200 and pHandle != "":
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self.propagateCount(pHandle, pCount, nDepth+1)
|
||
return
|
||
|
||
def projectWordCount(self):
|
||
"""Sum up the word counts for all root items and set the
|
||
relevant values in the project and on the status bar. This call
|
||
is a fast way of getting this number, and depends on the
|
||
propagateCount function being called when it should to maintain
|
||
the correct count.
|
||
"""
|
||
nWords = 0
|
||
for n in range(self.topLevelItemCount()):
|
||
tItem = self.topLevelItem(n)
|
||
if tItem == self.orphRoot:
|
||
continue
|
||
nWords += int(tItem.text(self.C_COUNT))
|
||
self.theProject.setProjectWordCount(nWords)
|
||
sWords = self.theProject.getSessionWordCount()
|
||
self.theParent.statusBar.setStats(nWords,sWords)
|
||
return
|
||
|
||
def buildTree(self):
|
||
"""Build the entire project tree from scratch. This depends on
|
||
the save project item iterator in the project class which will
|
||
always make sure items with a parent have had their parent item
|
||
sent first.
|
||
"""
|
||
self.clear()
|
||
for nwItem in self.theProject.getProjectItems():
|
||
self._addTreeItem(nwItem)
|
||
return True
|
||
|
||
def getSelectedHandle(self):
|
||
"""Get the currently selected handle. If multiple items are
|
||
selected, return the first.
|
||
"""
|
||
selItem = self.selectedItems()
|
||
if len(selItem) == 0:
|
||
return None
|
||
if isinstance(selItem[0], QTreeWidgetItem):
|
||
return selItem[0].data(self.C_NAME, Qt.UserRole)
|
||
return None
|
||
|
||
def getSelectedHandles(self):
|
||
"""Return a list of all currently selected item handles.
|
||
"""
|
||
selItems = self.selectedItems()
|
||
selHandles = []
|
||
for n in range(len(selItems)):
|
||
if isinstance(selItems[n], QTreeWidgetItem):
|
||
selHandles.append(selItems[n].data(self.C_NAME, Qt.UserRole))
|
||
return selHandles
|
||
|
||
def setSelectedHandle(self, tHandle):
|
||
"""Set a specific handle as the selected item.
|
||
"""
|
||
if tHandle in self.theMap:
|
||
self.clearSelection()
|
||
self.theMap[tHandle].setSelected(True)
|
||
selItems = self.selectedIndexes()
|
||
if selItems:
|
||
self.scrollTo(
|
||
selItems[0], QAbstractItemView.PositionAtCenter
|
||
)
|
||
return True
|
||
return False
|
||
|
||
##
|
||
# Internal Functions
|
||
##
|
||
|
||
def _getTreeItem(self, tHandle):
|
||
"""Returns the QTreeWidgetItem of a given item handle.
|
||
"""
|
||
if tHandle in self.theMap.keys():
|
||
return self.theMap[tHandle]
|
||
return None
|
||
|
||
def _scanChildren(self, theList, theItem, theIndex):
|
||
"""This is a recursive function returning all items in a tree
|
||
starting at a given QTreeWidgetItem.
|
||
"""
|
||
tHandle = theItem.data(self.C_NAME, Qt.UserRole)
|
||
nwItem = self.theProject.projTree[tHandle]
|
||
nwItem.setExpanded(theItem.isExpanded())
|
||
nwItem.setOrder(theIndex)
|
||
theList.append(tHandle)
|
||
for i in range(theItem.childCount()):
|
||
self._scanChildren(theList, theItem.child(i), i)
|
||
return theList
|
||
|
||
def _addTreeItem(self, nwItem):
|
||
"""Create a QTreeWidgetItem from an NWItem and add it to the
|
||
project tree.
|
||
"""
|
||
tHandle = nwItem.itemHandle
|
||
pHandle = nwItem.parHandle
|
||
tClass = nwItem.itemClass
|
||
newItem = QTreeWidgetItem([""]*4)
|
||
|
||
newItem.setText(self.C_NAME, "")
|
||
newItem.setText(self.C_COUNT, "0")
|
||
newItem.setText(self.C_EXPORT, "")
|
||
newItem.setText(self.C_FLAGS, "")
|
||
|
||
newItem.setTextAlignment(self.C_NAME, Qt.AlignLeft | Qt.AlignVCenter)
|
||
newItem.setTextAlignment(self.C_COUNT, Qt.AlignRight | Qt.AlignVCenter)
|
||
newItem.setTextAlignment(self.C_EXPORT, Qt.AlignLeft | Qt.AlignVCenter)
|
||
newItem.setTextAlignment(self.C_FLAGS, Qt.AlignLeft | Qt.AlignVCenter)
|
||
|
||
newItem.setFont(self.C_NAME, self.theTheme.guiFont)
|
||
newItem.setFont(self.C_COUNT, self.theTheme.guiFont)
|
||
newItem.setFont(self.C_FLAGS, self.theTheme.guiFont)
|
||
|
||
newItem.setData(self.C_NAME, Qt.UserRole, tHandle)
|
||
|
||
self.theMap[tHandle] = newItem
|
||
if pHandle is None:
|
||
if nwItem.itemType == nwItemType.ROOT:
|
||
self.addTopLevelItem(newItem)
|
||
self.theParent.mainMenu.setAvailableRoot()
|
||
elif nwItem.itemType == nwItemType.TRASH:
|
||
self.addTopLevelItem(newItem)
|
||
else:
|
||
self._addOrphanedRoot()
|
||
self.orphRoot.addChild(newItem)
|
||
else:
|
||
self.theMap[pHandle].addChild(newItem)
|
||
self.propagateCount(tHandle, nwItem.wordCount)
|
||
|
||
self.setTreeItemValues(tHandle)
|
||
newItem.setExpanded(nwItem.isExpanded)
|
||
|
||
if nwItem.itemType == nwItemType.ROOT:
|
||
newItem.setIcon(self.C_NAME, self.theTheme.getIcon(nwLabels.CLASS_ICON[tClass]))
|
||
elif nwItem.itemType == nwItemType.FOLDER:
|
||
newItem.setIcon(self.C_NAME, self.theTheme.getIcon("proj_folder"))
|
||
elif nwItem.itemType == nwItemType.FILE:
|
||
newItem.setIcon(self.C_NAME, self.theTheme.getIcon("proj_document"))
|
||
elif nwItem.itemType == nwItemType.TRASH:
|
||
newItem.setIcon(self.C_NAME, self.theTheme.getIcon(nwLabels.CLASS_ICON[tClass]))
|
||
|
||
return newItem
|
||
|
||
def _addTrashRoot(self):
|
||
"""Adds the trash root folder if it doesn't already exist in the
|
||
project tree.
|
||
"""
|
||
trashHandle = self.theProject.trashFolder()
|
||
if trashHandle is None:
|
||
return None
|
||
trItem = self._getTreeItem(trashHandle)
|
||
if trItem is None:
|
||
trItem = self._addTreeItem(
|
||
self.theProject.projTree[trashHandle]
|
||
)
|
||
trItem.setExpanded(True)
|
||
return trItem
|
||
|
||
def _addOrphanedRoot(self):
|
||
"""Add the special Orphaned Files root item to hold non-root
|
||
items with no parent set.
|
||
"""
|
||
if self.orphRoot is None:
|
||
newItem = QTreeWidgetItem([""]*4)
|
||
newItem.setText(self.C_NAME, "Orphaned Files")
|
||
newItem.setText(self.C_COUNT, "")
|
||
newItem.setText(self.C_EXPORT, "")
|
||
newItem.setText(self.C_FLAGS, "")
|
||
self.addTopLevelItem(newItem)
|
||
self.orphRoot = newItem
|
||
newItem.setExpanded(True)
|
||
newItem.setData(self.C_NAME, "")
|
||
newItem.setIcon(self.C_NAME, self.theTheme.getIcon("warning"))
|
||
return
|
||
|
||
def _cleanOrphanedRoot(self):
|
||
"""Remove the special Orphaned Files root folder if it is empty.
|
||
"""
|
||
if self.orphRoot is not None:
|
||
if self.orphRoot.childCount() == 0:
|
||
self.takeTopLevelItem(self.indexOfTopLevelItem(self.orphRoot))
|
||
self.orphRoot = None
|
||
return
|
||
|
||
def _updateItemParent(self, tHandle):
|
||
"""Update the parent handle of an item so that the information
|
||
in the project is consistent with the treeView. Also move the
|
||
word count over to the new parent tree.
|
||
"""
|
||
trItemS = self._getTreeItem(tHandle)
|
||
nwItemS = self.theProject.projTree[tHandle]
|
||
trItemP = trItemS.parent()
|
||
if trItemP is None:
|
||
logger.error("Failed to find new parent item of %s" % tHandle)
|
||
return False
|
||
|
||
pHandle = trItemP.data(self.C_NAME, Qt.UserRole)
|
||
wC = int(trItemS.text(self.C_COUNT))
|
||
self.propagateCount(tHandle, -wC)
|
||
nwItemS.setParent(pHandle)
|
||
self.propagateCount(tHandle, wC)
|
||
self.setTreeItemValues(tHandle)
|
||
self.theProject.setProjectChanged(True)
|
||
|
||
logger.debug("The parent of item %s has been changed to %s" % (tHandle,pHandle))
|
||
|
||
return True
|
||
|
||
def _moveOrphanedItem(self, tHandle, dHandle):
|
||
"""Move an Orphaned Item to a new dHandle parent item. This
|
||
function will set all the missing meta data based on the meta
|
||
data of the destination item.
|
||
"""
|
||
trItemS = self._getTreeItem(tHandle)
|
||
nwItemS = self.theProject.projTree[tHandle]
|
||
nwItemD = self.theProject.projTree[dHandle]
|
||
trItemP = trItemS.parent()
|
||
nwItemS.setClass(nwItemD.itemClass)
|
||
if trItemP is None:
|
||
logger.error("Failed to find new parent item of %s" % tHandle)
|
||
return
|
||
pHandle = trItemP.data(self.C_NAME, Qt.UserRole)
|
||
nwItemS.setParent(pHandle)
|
||
self.setTreeItemValues(tHandle)
|
||
self.theProject.setProjectChanged(True)
|
||
return
|
||
|
||
##
|
||
# Event Overloading
|
||
##
|
||
|
||
def mousePressEvent(self, theEvent):
|
||
"""Overload mousePressEvent to clear selection if clicking the
|
||
mouse in a blank area of the tree view.
|
||
"""
|
||
QTreeWidget.mousePressEvent(self, theEvent)
|
||
selItem = self.indexAt(theEvent.pos())
|
||
if not selItem.isValid():
|
||
self.clearSelection()
|
||
return
|
||
|
||
def dropEvent(self, theEvent):
|
||
"""Overload the drop of dragged item event to check whether the
|
||
drop is allowed or not. Disallowed drops are cancelled.
|
||
"""
|
||
sHandle = self.getSelectedHandle()
|
||
if sHandle is None:
|
||
logger.error("No handle selected")
|
||
return
|
||
|
||
dIndex = self.indexAt(theEvent.pos())
|
||
if not dIndex.isValid():
|
||
logger.error("Invalid drop index")
|
||
return
|
||
|
||
dItem = self.itemFromIndex(dIndex)
|
||
dHandle = dItem.data(self.C_NAME, Qt.UserRole)
|
||
snItem = self.theProject.projTree[sHandle]
|
||
dnItem = self.theProject.projTree[dHandle]
|
||
if dnItem is None:
|
||
self.makeAlert("The item cannot be moved to that location.", nwAlert.ERROR)
|
||
return
|
||
|
||
isSame = snItem.itemClass == dnItem.itemClass
|
||
isNone = snItem.itemClass == nwItemClass.NO_CLASS
|
||
isNote = snItem.itemLayout == nwItemLayout.NOTE
|
||
onFile = dnItem.itemType == nwItemType.FILE
|
||
isRoot = snItem.itemType == nwItemType.ROOT
|
||
onRoot = dnItem.itemType == nwItemType.ROOT
|
||
isOnTop = self.dropIndicatorPosition() == QAbstractItemView.OnItem
|
||
if (isSame or isNone or isNote) and not (onFile and isOnTop) and not isRoot:
|
||
logger.debug("Drag'n'drop of item %s accepted" % sHandle)
|
||
QTreeWidget.dropEvent(self, theEvent)
|
||
if isNone:
|
||
self._moveOrphanedItem(sHandle, dHandle)
|
||
self._cleanOrphanedRoot()
|
||
else:
|
||
self._updateItemParent(sHandle)
|
||
if not isSame:
|
||
logger.debug("Item %s class has been changed from %s to %s" % (
|
||
sHandle,
|
||
snItem.itemClass.name,
|
||
dnItem.itemClass.name
|
||
))
|
||
snItem.setClass(dnItem.itemClass)
|
||
self.setTreeItemValues(sHandle)
|
||
else:
|
||
logger.debug("Drag'n'drop of item %s not accepted" % sHandle)
|
||
self.makeAlert("The item cannot be moved to that location.", nwAlert.ERROR)
|
||
|
||
return
|
||
|
||
# END Class GuiProjectTree
|