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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++ #include "mainwindow.h"
++
++ #include <QMenu>
++ #include <QMenuBar>
++ #include <QTextEdit>
++ #include <QTextList>
++ #include <QTreeWidget>
++
++ MainWindow::MainWindow()
++ {
++ QMenu *fileMenu = new QMenu(tr("&File"));
++
++ fileMenu->addAction(tr("E&xit"), QKeySequence(tr("Ctrl+Q", "File|Exit")),
++ this, &QWidget::close);
++
++ QMenu *actionsMenu = new QMenu(tr("&Actions"));
++ actionsMenu->addAction(tr("&Highlight List Items"),
++ this, &MainWindow::highlightListItems);
++ actionsMenu->addAction(tr("&Show Current List"), this, &MainWindow::showList);
++
++ QMenu *insertMenu = new QMenu(tr("&Insert"));
++
++ insertMenu->addAction(tr("&List"), QKeySequence(tr("Ctrl+L", "Insert|List")),
++ this, &MainWindow::insertList);
++
++ menuBar()->addMenu(fileMenu);
++ menuBar()->addMenu(insertMenu);
++ menuBar()->addMenu(actionsMenu);
++
++ editor = new QTextEdit(this);
++ document = new QTextDocument(this);
++ editor->setDocument(document);
++
++ setCentralWidget(editor);
++ setWindowTitle(tr("Text Document List Items"));
++ }
++
++ void MainWindow::highlightListItems()
++ {
++ QTextCursor cursor = editor->textCursor();
++ QTextList *list = cursor.currentList();
++
++ if (!list)
++ return;
++
++ cursor.beginEditBlock();
++ //! [0]
++ for (int index = 0; index < list->count(); ++index) {
++ QTextBlock listItem = list->item(index);
++ //! [0]
++ QTextBlockFormat newBlockFormat = listItem.blockFormat();
++ newBlockFormat.setBackground(Qt::lightGray);
++ QTextCursor itemCursor = cursor;
++ itemCursor.setPosition(listItem.position());
++ //itemCursor.movePosition(QTextCursor::StartOfBlock);
++ itemCursor.movePosition(QTextCursor::EndOfBlock,
++ QTextCursor::KeepAnchor);
++ itemCursor.setBlockFormat(newBlockFormat);
++ /*
++ //! [1]
++ processListItem(listItem);
++ //! [1]
++ */
++ //! [2]
++ }
++ //! [2]
++ cursor.endEditBlock();
++ }
++
++ void MainWindow::showList()
++ {
++ QTextCursor cursor = editor->textCursor();
++ QTextFrame *frame = cursor.currentFrame();
++
++ if (!frame)
++ return;
++
++ QTreeWidget *treeWidget = new QTreeWidget;
++ treeWidget->setColumnCount(1);
++ QStringList headerLabels;
++ headerLabels << tr("Lists");
++ treeWidget->setHeaderLabels(headerLabels);
++
++ QTreeWidgetItem *parentItem = nullptr;
++ QTreeWidgetItem *item;
++ QTreeWidgetItem *lastItem = nullptr;
++ parentItems.clear();
++ previousItems.clear();
++
++ //! [3]
++ QTextFrame::iterator it;
++ for (it = frame->begin(); !(it.atEnd()); ++it) {
++
++ QTextBlock block = it.currentBlock();
++
++ if (block.isValid()) {
++
++ QTextList *list = block.textList();
++
++ if (list) {
++ int index = list->itemNumber(block);
++ //! [3]
++ if (index == 0) {
++ parentItems.append(parentItem);
++ previousItems.append(lastItem);
++ listStructures.append(list);
++ parentItem = lastItem;
++ lastItem = 0;
++
++ if (parentItem != 0)
++ item = new QTreeWidgetItem(parentItem, lastItem);
++ else
++ item = new QTreeWidgetItem(treeWidget, lastItem);
++
++ } else {
++
++ while (parentItem != 0 && listStructures.last() != list) {
++ listStructures.pop_back();
++ parentItem = parentItems.takeLast();
++ lastItem = previousItems.takeLast();
++ }
++ if (parentItem != 0)
++ item = new QTreeWidgetItem(parentItem, lastItem);
++ else
++ item = new QTreeWidgetItem(treeWidget, lastItem);
++ }
++ item->setText(0, block.text());
++ lastItem = item;
++ /*
++ //! [4]
++ processListItem(list, index);
++ //! [4]
++ */
++ //! [5]
++ }
++ //! [5] //! [6]
++ }
++ //! [6] //! [7]
++ }
++ //! [7]
++
++ treeWidget->setWindowTitle(tr("List Contents"));
++ treeWidget->show();
++ }
++
++ void MainWindow::insertList()
++ {
++ QTextCursor cursor = editor->textCursor();
++ cursor.beginEditBlock();
++
++ QTextList *list = cursor.currentList();
++ QTextListFormat listFormat;
++ if (list)
++ listFormat = list->format();
++
++ listFormat.setStyle(QTextListFormat::ListDisc);
++ listFormat.setIndent(listFormat.indent() + 1);
++ cursor.insertList(listFormat);
++
++ cursor.endEditBlock();
++ }