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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, SLOT(close()));
QMenu *actionsMenu = new QMenu(tr("&Actions"));
actionsMenu->addAction(tr("&Highlight List Items"),
this, SLOT(highlightListItems()));
actionsMenu->addAction(tr("&Show Current List"), this, SLOT(showList()));
QMenu *insertMenu = new QMenu(tr("&Insert"));
insertMenu->addAction(tr("&List"), QKeySequence(tr("Ctrl+L", "Insert|List")),
this, SLOT(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();
}
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