Veronica K. B. Olsen
732 lines
24 KiB
Python
732 lines
24 KiB
Python
# -*- coding: utf-8 -*-
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"""novelWriter GUI Document Editor
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novelWriter – GUI Document Editor
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===================================
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Class holding the document editor
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File History:
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Created: 2018-09-29 [0.0.1]
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"""
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import logging
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import nw
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from time import time
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from PyQt5.QtCore import Qt, QTimer, QSizeF
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from PyQt5.QtWidgets import (
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qApp, QTextEdit, QAction, QMenu, QShortcut, QMessageBox
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)
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from PyQt5.QtGui import (
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QTextCursor, QTextOption, QIcon, QKeySequence, QFont, QColor,
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QPalette, QTextDocument,
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)
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from nw.project import NWDoc
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from nw.gui.tools import GuiDocHighlighter, WordCounter
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from nw.tools import NWSpellCheck
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from nw.constants import nwFiles, nwUnicode
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from nw.enum import nwDocAction, nwAlert
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logger = logging.getLogger(__name__)
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class GuiDocEditor(QTextEdit):
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def __init__(self, theParent, theProject):
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QTextEdit.__init__(self)
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logger.debug("Initialising DocEditor ...")
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# Class Variables
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self.mainConf = nw.CONFIG
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self.theProject = theProject
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self.theParent = theParent
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self.theTheme = theParent.theTheme
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self.docChanged = False
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self.spellCheck = False
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self.nwDocument = NWDoc(self.theProject, self.theParent)
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self.theHandle = None
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# Document Variables
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self.charCount = 0
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self.wordCount = 0
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self.paraCount = 0
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self.lastEdit = 0
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# Typography
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self.typDQOpen = self.mainConf.fmtDoubleQuotes[0]
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self.typDQClose = self.mainConf.fmtDoubleQuotes[1]
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self.typSQOpen = self.mainConf.fmtSingleQuotes[0]
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self.typSQClose = self.mainConf.fmtSingleQuotes[1]
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# Core Elements
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self.qDocument = self.document()
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self.qDocument.setDocumentMargin(self.mainConf.textMargin)
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self.qDocument.contentsChange.connect(self._docChange)
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if self.mainConf.spellTool == "enchant":
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from nw.tools.spellenchant import NWSpellEnchant
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self.theDict = NWSpellEnchant()
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else:
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self.theDict = NWSpellCheck()
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self.hLight = GuiDocHighlighter(self.qDocument, self.theParent)
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self.hLight.setDict(self.theDict)
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# Context Menu
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self.setContextMenuPolicy(Qt.CustomContextMenu)
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self.customContextMenuRequested.connect(self._openContextMenu)
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# Editor State
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self.hasSelection = False
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self.setMinimumWidth(300)
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self.setAcceptRichText(False)
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# Custom Shortcuts
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QShortcut(
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QKeySequence("Ctrl+."),
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self,
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context=Qt.WidgetShortcut,
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activated=self._openSpellContext
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)
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QShortcut(
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Qt.Key_Return | Qt.ControlModifier,
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self,
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context=Qt.WidgetShortcut,
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activated=self._followTag
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)
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QShortcut(
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Qt.Key_Enter | Qt.ControlModifier,
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self,
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context=Qt.WidgetShortcut,
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activated=self._followTag
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)
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# Set Up Word Count Thread and Timer
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self.wcInterval = self.mainConf.wordCountTimer
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self.wcTimer = QTimer()
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self.wcTimer.setInterval(int(self.wcInterval*1000))
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self.wcTimer.timeout.connect(self._runCounter)
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self.wCounter = WordCounter(self)
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self.wCounter.finished.connect(self._updateCounts)
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self.initEditor()
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logger.debug("DocEditor initialisation complete")
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return
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def clearEditor(self):
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self.nwDocument.clearDocument()
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self.setReadOnly(True)
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self.clear()
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self.wcTimer.stop()
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self.theHandle = None
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self.charCount = 0
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self.wordCount = 0
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self.paraCount = 0
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self.lastEdit = 0
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self.hasSelection = False
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self.setDocumentChanged(False)
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self.theParent.noticeBar.hideNote()
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return True
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def initEditor(self):
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"""Initialise or re-initialise the editor with the user's
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settings. This function is both called when the editor is
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created, and when the user changes the main editor preferences.
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"""
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# Reload dictionaries
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self.setDictionaries()
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# Set font
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theFont = QFont()
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if self.mainConf.textFont is None:
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# If none is defined, set the default back to config
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self.mainConf.textFont = self.qDocument.defaultFont().family()
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theFont.setFamily(self.mainConf.textFont)
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theFont.setPointSize(self.mainConf.textSize)
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self.setFont(theFont)
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docPalette = self.palette()
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docPalette.setColor(QPalette.Base, QColor(*self.theTheme.colBack))
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docPalette.setColor(QPalette.Text, QColor(*self.theTheme.colText))
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self.setPalette(docPalette)
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# Set default text margins
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self.qDocument.setDocumentMargin(self.mainConf.textMargin)
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# Also set the document text options for the document text flow
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theOpt = QTextOption()
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if self.mainConf.tabWidth is not None:
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if self.mainConf.verQtValue >= 51000:
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theOpt.setTabStopDistance(self.mainConf.tabWidth)
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if self.mainConf.doJustify:
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theOpt.setAlignment(Qt.AlignJustify)
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if self.mainConf.showTabsNSpaces:
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theOpt.setFlags(theOpt.flags() | QTextOption.ShowTabsAndSpaces)
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if self.mainConf.showLineEndings:
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theOpt.setFlags(theOpt.flags() | QTextOption.ShowLineAndParagraphSeparators)
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self.qDocument.setDefaultTextOption(theOpt)
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# Initialise the syntax highlighter
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self.hLight.initHighlighter()
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# If we have a document open, we should reload it in case the
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# font changed, otherwise we just clear the editor entirely,
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# which makes it read only.
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if self.theHandle is not None:
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# We must save the current handle as clearEditor() sets it
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# to None
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tHandle = self.theHandle
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self.clearEditor()
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self.loadText(tHandle)
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self.changeWidth()
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else:
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self.clearEditor()
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return True
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def loadText(self, tHandle):
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"""Load text from a document into the editor. If we have an io
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error, we must handle this and clear the editor so that we don't
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risk overwriting the file if it exists. This can for instance
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happen of the file contains binary elements or an encoding that
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novelWriter does not support. If load is successful, or the
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document is new (empty string) we set up the editor for editing
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the file.
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"""
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theDoc = self.nwDocument.openDocument(tHandle)
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if theDoc is None:
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# There was an io error
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self.clearEditor()
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return False
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self.hLight.setHandle(tHandle)
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self.setPlainText(theDoc)
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self.setCursorPosition(self.nwDocument.theItem.cursorPos)
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self.lastEdit = time()
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self._runCounter()
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self.wcTimer.start()
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self.setDocumentChanged(False)
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self.theHandle = tHandle
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if self.nwDocument.docEditable:
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self.setReadOnly(False)
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else:
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self.theParent.noticeBar.showNote("This document is read only.")
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return True
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def saveText(self):
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if self.nwDocument.theItem is None:
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return False
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docText = self.getText()
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cursPos = self.getCursorPosition()
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theItem = self.nwDocument.theItem
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theItem.setCharCount(self.charCount)
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theItem.setWordCount(self.wordCount)
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theItem.setParaCount(self.paraCount)
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theItem.setCursorPos(cursPos)
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self.nwDocument.saveDocument(docText)
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self.setDocumentChanged(False)
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self.theParent.theIndex.scanText(theItem.itemHandle, docText)
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return True
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##
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# Setters and Getters
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##
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def setDocumentChanged(self, bValue):
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self.docChanged = bValue
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self.theParent.statusBar.setDocumentStatus(self.docChanged)
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return self.docChanged
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def getText(self):
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"""Get the text content of the current document. This method
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uses QTextEdit->toPlainText for Qt versions lower than 5.9, and
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the QDocument->toRawText for higher version. The latter
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preserves non-breaking spaces, which the former does not.
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"""
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if self.mainConf.verQtValue >= 50900:
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theText = self.qDocument.toRawText().replace(nwUnicode.U_PARA,"\n")
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else:
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theText = self.toPlainText()
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return theText
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def setCursorPosition(self, thePosition):
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if thePosition > 0:
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theCursor = self.textCursor()
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theCursor.setPosition(thePosition)
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self.setTextCursor(theCursor)
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return True
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def getCursorPosition(self):
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theCursor = self.textCursor()
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return theCursor.position()
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##
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# Spell Checking
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##
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def setDictionaries(self):
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self.theDict.setLanguage(self.mainConf.spellLanguage, self.theProject.projDict)
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return True
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def setSpellCheck(self, theMode):
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self.spellCheck = theMode
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self.hLight.setSpellCheck(theMode)
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self.hLight.rehighlight()
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return True
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def updateSpellCheck(self):
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if self.spellCheck:
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self.hLight.rehighlight()
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return True
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##
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# General Class Methods
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##
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def changeWidth(self):
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"""Automatically adjust the margins so the text is centred, but
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only if Config.textFixedW is set to True.
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"""
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if self.mainConf.textFixedW:
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vBar = self.verticalScrollBar()
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if vBar.isVisible():
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sW = vBar.width()
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else:
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sW = 0
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tW = self.mainConf.textWidth
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wW = self.width()
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tM = int((wW - sW - tW)/2)
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if tM < self.mainConf.textMargin:
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tM = self.mainConf.textMargin
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docFormat = self.qDocument.rootFrame().frameFormat()
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docFormat.setLeftMargin(tM)
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docFormat.setRightMargin(tM)
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self.qDocument.rootFrame().setFrameFormat(docFormat)
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return
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def docAction(self, theAction):
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logger.verbose("Requesting action: %s" % theAction.name)
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if not self.theParent.hasProject:
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logger.error("No project open")
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return False
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if theAction == nwDocAction.UNDO:
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self.undo()
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elif theAction == nwDocAction.REDO:
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self.redo()
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elif theAction == nwDocAction.CUT:
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self.cut()
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elif theAction == nwDocAction.COPY:
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self.copy()
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elif theAction == nwDocAction.PASTE:
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self.paste()
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elif theAction == nwDocAction.BOLD:
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self._wrapSelection("**","**")
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elif theAction == nwDocAction.ITALIC:
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self._wrapSelection("_","_")
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elif theAction == nwDocAction.U_LINE:
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self._wrapSelection("__","__")
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elif theAction == nwDocAction.S_QUOTE:
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self._wrapSelection(self.typSQOpen,self.typSQClose)
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elif theAction == nwDocAction.D_QUOTE:
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self._wrapSelection(self.typDQOpen,self.typDQClose)
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elif theAction == nwDocAction.SEL_ALL:
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self._makeSelection(QTextCursor.Document)
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elif theAction == nwDocAction.SEL_PARA:
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self._makeSelection(QTextCursor.BlockUnderCursor)
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elif theAction == nwDocAction.FIND:
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self._beginSearch()
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elif theAction == nwDocAction.REPLACE:
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self._beginReplace()
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elif theAction == nwDocAction.GO_NEXT:
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self._findNext()
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elif theAction == nwDocAction.GO_PREV:
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self._findPrev()
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elif theAction == nwDocAction.REPL_NEXT:
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self._replaceNext()
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else:
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logger.error("Unknown or unsupported document action %s" % str(theAction))
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return False
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return True
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def isEmpty(self):
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return self.qDocument.isEmpty()
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def revealLocation(self):
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if self.theHandle is not None:
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msgBox = QMessageBox()
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msgBox.information(self, "File Location", (
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"File details for the currently open file<br>"
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"Handle: {handle:s}<br>"
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"Location: {fileLoc:s}"
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).format(
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handle = self.theHandle,
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fileLoc = str(self.nwDocument.fileLoc)
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))
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return
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##
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# Document Events and Maintenance
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##
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def keyPressEvent(self, keyEvent):
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"""Intercept key press events.
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We need to intercept key presses briefly to record the state of
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selection. This is in order to know whether we had a selection
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prior to triggering the _docChange slot, as we do not want to
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trigger autoreplace on selections. Autoreplace on selections
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messes with undo/redo history.
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We also need to intercept the Shift key modifier for certain key
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combinations that modifies standard keys like enter and space.
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However, we don't want to spend a lot of time in this function
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as it is triggered on every keypress when typing.
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"""
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self.hasSelection = self.textCursor().hasSelection()
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if keyEvent.modifiers() == Qt.ShiftModifier:
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theKey = keyEvent.key()
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if theKey == Qt.Key_Return:
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self._insertHardBreak()
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elif theKey == Qt.Key_Enter:
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self._insertHardBreak()
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elif theKey == Qt.Key_Space:
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self._insertNonBreakingSpace()
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else:
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QTextEdit.keyPressEvent(self, keyEvent)
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else:
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QTextEdit.keyPressEvent(self, keyEvent)
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return
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def mouseReleaseEvent(self, mEvent):
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"""If the mouse button is released and the control key is
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pressed, check if we're clicking on a tag, and trigger the
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follow tag function.
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"""
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if qApp.keyboardModifiers() == Qt.ControlModifier:
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theCursor = self.cursorForPosition(mEvent.pos())
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self._followTag(theCursor)
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QTextEdit.mouseReleaseEvent(self, mEvent)
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return
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##
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# Internal Functions
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##
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def _followTag(self, theCursor=None):
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"""Activated by Ctrl+Enter. Checks that we're in a block
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starting with '@'. We then find the word under the cursor and
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check that it is after the ':'. If all this is fine, we have a
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tag and can tell the document viewer to try and find and load
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the file where the tag is defined.
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"""
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if theCursor is None:
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theCursor = self.textCursor()
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theBlock = theCursor.block()
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theText = theBlock.text()
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if len(theText) == 0:
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return False
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if theText.startswith("@"):
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theCursor.select(QTextCursor.WordUnderCursor)
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theWord = theCursor.selectedText()
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cPos = theText.find(":")
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wPos = theCursor.selectionStart() - theBlock.position()
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if wPos <= cPos:
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return False
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logger.verbose("Attempting to follow tag '%s'" % theWord)
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self.theParent.docViewer.loadFromTag(theWord)
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return True
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def _insertHardBreak(self):
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theCursor = self.textCursor()
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theCursor.beginEditBlock()
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theCursor.insertText(" \n")
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theCursor.endEditBlock()
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return
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def _insertNonBreakingSpace(self):
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theCursor = self.textCursor()
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theCursor.beginEditBlock()
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theCursor.insertText(nwUnicode.U_NBSP)
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theCursor.endEditBlock()
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return
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def _openSpellContext(self):
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self._openContextMenu(self.cursorRect().center())
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return
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def _openContextMenu(self, thePos):
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if not self.spellCheck:
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return
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theCursor = self.cursorForPosition(thePos)
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theCursor.select(QTextCursor.WordUnderCursor)
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theWord = theCursor.selectedText()
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if theWord == "":
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return
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if self.theDict.checkWord(theWord):
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return
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mnuSuggest = QMenu()
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mnuHead = QAction("Spelling Suggestion(s)", mnuSuggest)
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mnuSuggest.addAction(mnuHead)
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mnuSuggest.addSeparator()
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theSuggest = self.theDict.suggestWords(theWord)
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if len(theSuggest) > 0:
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for aWord in theSuggest:
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mnuWord = QAction(aWord, mnuSuggest)
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mnuWord.triggered.connect(
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lambda thePos, aWord=aWord : self._correctWord(theCursor, aWord)
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)
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mnuSuggest.addAction(mnuWord)
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mnuSuggest.addSeparator()
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mnuAdd = QAction("Add Word to Dictionary", mnuSuggest)
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mnuAdd.triggered.connect(lambda thePos : self._addWord(theCursor))
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mnuSuggest.addAction(mnuAdd)
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else:
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mnuHead = QAction("No Suggestions", mnuSuggest)
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mnuSuggest.addAction(mnuHead)
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mnuSuggest.exec_(self.viewport().mapToGlobal(thePos))
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return
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def _correctWord(self, theCursor, theWord):
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xPos = theCursor.selectionStart()
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theCursor.beginEditBlock()
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theCursor.removeSelectedText()
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theCursor.insertText(theWord)
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theCursor.endEditBlock()
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theCursor.setPosition(xPos)
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self.setTextCursor(theCursor)
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return
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def _addWord(self, theCursor):
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theWord = theCursor.selectedText().strip()
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logger.info("Added '%s' to project dictionary" % theWord)
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self.theDict.addWord(theWord)
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self.hLight.setDict(self.theDict)
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self.hLight.rehighlightBlock(theCursor.block())
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return
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def _docChange(self, thePos, charsRemoved, charsAdded):
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self.lastEdit = time()
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if not self.docChanged:
|
||
self.setDocumentChanged(True)
|
||
if not self.wcTimer.isActive():
|
||
self.wcTimer.start()
|
||
if self.mainConf.doReplace and not self.hasSelection:
|
||
self._docAutoReplace(self.qDocument.findBlock(thePos))
|
||
return
|
||
|
||
def _docAutoReplace(self, theBlock):
|
||
"""Autoreplace text elements based on main configuration.
|
||
"""
|
||
|
||
if not theBlock.isValid():
|
||
return
|
||
|
||
theText = theBlock.text()
|
||
theCursor = self.textCursor()
|
||
thePos = theCursor.positionInBlock()
|
||
theLen = len(theText)
|
||
|
||
if theLen < 1 or thePos-1 > theLen:
|
||
return
|
||
|
||
theOne = theText[thePos-1:thePos]
|
||
theTwo = theText[thePos-2:thePos]
|
||
theThree = theText[thePos-3:thePos]
|
||
|
||
if self.mainConf.doReplaceDQuote and theTwo == " \"":
|
||
theCursor.movePosition(QTextCursor.Left, QTextCursor.KeepAnchor, 1)
|
||
theCursor.insertText(self.typDQOpen)
|
||
|
||
elif self.mainConf.doReplaceDQuote and theOne == "\"":
|
||
theCursor.movePosition(QTextCursor.Left, QTextCursor.KeepAnchor, 1)
|
||
if thePos == 1:
|
||
theCursor.insertText(self.typDQOpen)
|
||
else:
|
||
theCursor.insertText(self.typDQClose)
|
||
|
||
elif self.mainConf.doReplaceSQuote and theTwo == " '":
|
||
theCursor.movePosition(QTextCursor.Left, QTextCursor.KeepAnchor, 1)
|
||
theCursor.insertText(self.typSQOpen)
|
||
|
||
elif self.mainConf.doReplaceSQuote and theOne == "'":
|
||
theCursor.movePosition(QTextCursor.Left, QTextCursor.KeepAnchor, 1)
|
||
if thePos == 1:
|
||
theCursor.insertText(self.typSQOpen)
|
||
else:
|
||
theCursor.insertText(self.typSQClose)
|
||
|
||
elif self.mainConf.doReplaceDash and theTwo == "--":
|
||
theCursor.movePosition(QTextCursor.Left, QTextCursor.KeepAnchor, 2)
|
||
theCursor.insertText(nwUnicode.U_ENDASH)
|
||
|
||
elif self.mainConf.doReplaceDash and theTwo == nwUnicode.U_ENDASH+"-":
|
||
theCursor.movePosition(QTextCursor.Left, QTextCursor.KeepAnchor, 2)
|
||
theCursor.insertText(nwUnicode.U_EMDASH)
|
||
|
||
elif self.mainConf.doReplaceDots and theThree == "...":
|
||
theCursor.movePosition(QTextCursor.Left, QTextCursor.KeepAnchor, 3)
|
||
theCursor.insertText(nwUnicode.U_HELLIP)
|
||
|
||
return
|
||
|
||
def _runCounter(self):
|
||
"""Decide whether to run the word counter, or stop the timer due
|
||
to inactivity.
|
||
"""
|
||
sinceActive = time()-self.lastEdit
|
||
if sinceActive > 5*self.wcInterval:
|
||
logger.debug("Stopping word count timer: no activity last %.1f seconds" % sinceActive)
|
||
self.wcTimer.stop()
|
||
elif self.wCounter.isRunning():
|
||
logger.verbose("Word counter thread is busy")
|
||
else:
|
||
logger.verbose("Starting word counter")
|
||
self.wCounter.start()
|
||
return
|
||
|
||
def _updateCounts(self):
|
||
"""Slot for the word counter's finished signal
|
||
"""
|
||
logger.verbose("Updating word count")
|
||
|
||
tHandle = self.nwDocument.docHandle
|
||
self.charCount = self.wCounter.charCount
|
||
self.wordCount = self.wCounter.wordCount
|
||
self.paraCount = self.wCounter.paraCount
|
||
self.theParent.statusBar.setCounts(self.charCount,self.wordCount,self.paraCount)
|
||
self.theParent.treeView.propagateCount(tHandle, self.wordCount)
|
||
self.theParent.treeView.projectWordCount()
|
||
|
||
return
|
||
|
||
def _wrapSelection(self, tBefore, tAfter):
|
||
"""Wraps the selected text in whatever is in tBefore and tAfter.
|
||
If there is no selection, the autoSelect setting decides the
|
||
action. AutoSelect will select the word under the cursor before
|
||
wrapping it. If this feature is disabled, nothing is done.
|
||
"""
|
||
theCursor = self.textCursor()
|
||
if self.mainConf.autoSelect and not theCursor.hasSelection():
|
||
theCursor.select(QTextCursor.WordUnderCursor)
|
||
if theCursor.hasSelection():
|
||
posS = theCursor.selectionStart()
|
||
posE = theCursor.selectionEnd()
|
||
theCursor.clearSelection()
|
||
theCursor.beginEditBlock()
|
||
theCursor.setPosition(posE)
|
||
theCursor.insertText(tAfter)
|
||
theCursor.setPosition(posS)
|
||
theCursor.insertText(tBefore)
|
||
theCursor.endEditBlock()
|
||
else:
|
||
logger.warning("No selection made, nothing to do")
|
||
return
|
||
|
||
def _makeSelection(self, selMode):
|
||
theCursor = self.textCursor()
|
||
theCursor.clearSelection()
|
||
theCursor.select(selMode)
|
||
self.setTextCursor(theCursor)
|
||
return
|
||
|
||
def _beginSearch(self):
|
||
"""Sets the selected text as the search text for the search bar.
|
||
"""
|
||
theCursor = self.textCursor()
|
||
if theCursor.hasSelection():
|
||
selText = theCursor.selectedText()
|
||
else:
|
||
selText = ""
|
||
self.theParent.searchBar.setSearchText(selText)
|
||
return
|
||
|
||
def _beginReplace(self):
|
||
"""Opens the replace line of the search bar and sets the replace
|
||
text.
|
||
"""
|
||
self._beginSearch()
|
||
self.theParent.searchBar.setReplaceText("")
|
||
return
|
||
|
||
def _findNext(self):
|
||
"""Searches for the next occurrence of the search bar text in
|
||
the document. Wraps back to the top if not found.
|
||
"""
|
||
searchFor = self.theParent.searchBar.getSearchText()
|
||
wasFound = self.find(searchFor)
|
||
if not wasFound:
|
||
theCursor = self.textCursor()
|
||
theCursor.movePosition(QTextCursor.Start)
|
||
self.setTextCursor(theCursor)
|
||
return
|
||
|
||
def _findPrev(self):
|
||
"""Searches for the previous occurrence of the search bar text
|
||
in the document. Wraps back to the end if not found.
|
||
"""
|
||
searchFor = self.theParent.searchBar.getSearchText()
|
||
wasFound = self.find(searchFor, QTextDocument.FindBackward)
|
||
if not wasFound:
|
||
theCursor = self.textCursor()
|
||
theCursor.movePosition(QTextCursor.End)
|
||
self.setTextCursor(theCursor)
|
||
return
|
||
|
||
def _replaceNext(self):
|
||
"""Searches for the next occurrence of the search bar text in
|
||
the document and replaces it with the replace text. Wraps back
|
||
to the top if not found.
|
||
"""
|
||
theCursor = self.textCursor()
|
||
searchFor = self.theParent.searchBar.getSearchText()
|
||
replWith = self.theParent.searchBar.getReplaceText()
|
||
if theCursor.hasSelection() and theCursor.selectedText() == searchFor:
|
||
xPos = theCursor.selectionStart()
|
||
theCursor.beginEditBlock()
|
||
theCursor.removeSelectedText()
|
||
theCursor.insertText(replWith)
|
||
theCursor.endEditBlock()
|
||
theCursor.setPosition(xPos)
|
||
self.setTextCursor(theCursor)
|
||
logger.verbose("Replaced occurrence of '%s' with '%s' on line %d" % (
|
||
searchFor, replWith, theCursor.blockNumber()
|
||
))
|
||
if searchFor != "":
|
||
self._findNext()
|
||
return
|
||
|
||
# END Class GuiDocEditor
|