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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of The Qt Company Ltd nor the names of its
+** contributors may be used to endorse or promote products derived
+** from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "tabwidget.h"
+#include "webpage.h"
+#include "webview.h"
+#include <QMenu>
+#include <QTabBar>
+#include <QWebEngineProfile>
+
+TabWidget::TabWidget(QWidget *parent)
+ : QTabWidget(parent)
+{
+ QTabBar *tabBar = this->tabBar();
+ tabBar->setTabsClosable(true);
+ tabBar->setSelectionBehaviorOnRemove(QTabBar::SelectPreviousTab);
+ tabBar->setMovable(true);
+ tabBar->setContextMenuPolicy(Qt::CustomContextMenu);
+ connect(tabBar, &QTabBar::customContextMenuRequested, this, &TabWidget::handleContextMenuRequested);
+ connect(tabBar, &QTabBar::tabCloseRequested, this, &TabWidget::closeTab);
+ connect(tabBar, &QTabBar::tabBarDoubleClicked, [this](int index) {
+ if (index != -1)
+ return;
+ createTab();
+ });
+
+ setDocumentMode(true);
+ setElideMode(Qt::ElideRight);
+
+ connect(this, &QTabWidget::currentChanged, this, &TabWidget::handleCurrentChanged);
+}
+
+TabWidget::~TabWidget()
+{
+}
+
+void TabWidget::handleCurrentChanged(int index)
+{
+ if (index != -1) {
+ WebView *view = webView(index);
+ if (!view->url().isEmpty())
+ view->setFocus();
+ emit titleChanged(view->title());
+ emit loadProgress(view->loadProgress());
+ emit urlChanged(view->url());
+ emit iconChanged(view->icon());
+ emit webActionEnabledChanged(QWebEnginePage::Back, view->isWebActionEnabled(QWebEnginePage::Back));
+ emit webActionEnabledChanged(QWebEnginePage::Forward, view->isWebActionEnabled(QWebEnginePage::Forward));
+ emit webActionEnabledChanged(QWebEnginePage::Stop, view->isWebActionEnabled(QWebEnginePage::Stop));
+ emit webActionEnabledChanged(QWebEnginePage::Reload,view->isWebActionEnabled(QWebEnginePage::Reload));
+ } else {
+ emit titleChanged(QString());
+ emit loadProgress(0);
+ emit urlChanged(QUrl());
+ emit iconChanged(QIcon());
+ emit webActionEnabledChanged(QWebEnginePage::Back, false);
+ emit webActionEnabledChanged(QWebEnginePage::Forward, false);
+ emit webActionEnabledChanged(QWebEnginePage::Stop, false);
+ emit webActionEnabledChanged(QWebEnginePage::Reload, true);
+ }
+}
+
+void TabWidget::handleContextMenuRequested(const QPoint &pos)
+{
+ QMenu menu;
+ menu.addAction(tr("New &Tab"), this, &TabWidget::createTab, QKeySequence::AddTab);
+ int index = tabBar()->tabAt(pos);
+ if (index != -1) {
+ QAction *action = menu.addAction(tr("Clone Tab"));
+ connect(action, &QAction::triggered, this, [this,index]() {
+ cloneTab(index);
+ });
+ menu.addSeparator();
+ action = menu.addAction(tr("&Close Tab"));
+ action->setShortcut(QKeySequence::Close);
+ connect(action, &QAction::triggered, this, [this,index]() {
+ closeTab(index);
+ });
+ action = menu.addAction(tr("Close &Other Tabs"));
+ connect(action, &QAction::triggered, this, [this,index]() {
+ closeOtherTabs(index);
+ });
+ menu.addSeparator();
+ action = menu.addAction(tr("Reload Tab"));
+ action->setShortcut(QKeySequence::Refresh);
+ connect(action, &QAction::triggered, this, [this,index]() {
+ reloadTab(index);
+ });
+ } else {
+ menu.addSeparator();
+ }
+ menu.addAction(tr("Reload All Tabs"), this, &TabWidget::reloadAllTabs);
+ menu.exec(QCursor::pos());
+}
+
+WebView *TabWidget::currentWebView() const
+{
+ return webView(currentIndex());
+}
+
+WebView *TabWidget::webView(int index) const
+{
+ return qobject_cast<WebView*>(widget(index));
+}
+
+void TabWidget::setupView(WebView *webView)
+{
+ QWebEnginePage *webPage = webView->page();
+
+ connect(webView, &QWebEngineView::titleChanged, [this, webView](const QString &title) {
+ int index = indexOf(webView);
+ if (index != -1)
+ setTabText(index, title);
+ if (currentIndex() == index)
+ emit titleChanged(title);
+ });
+ connect(webView, &QWebEngineView::urlChanged, [this, webView](const QUrl &url) {
+ int index = indexOf(webView);
+ if (index != -1)
+ tabBar()->setTabData(index, url);
+ if (currentIndex() == index)
+ emit urlChanged(url);
+ });
+ connect(webView, &QWebEngineView::loadProgress, [this, webView](int progress) {
+ if (currentIndex() == indexOf(webView))
+ emit loadProgress(progress);
+ });
+ connect(webPage, &QWebEnginePage::linkHovered, [this, webView](const QString &url) {
+ if (currentIndex() == indexOf(webView))
+ emit linkHovered(url);
+ });
+ connect(webView, &WebView::iconChanged, [this, webView](const QIcon& icon) {
+ int index = indexOf(webView);
+ if (index != -1)
+ setTabIcon(index, icon);
+ if (currentIndex() == index)
+ emit iconChanged(icon);
+ });
+ connect(webView, &WebView::webActionEnabledChanged, [this, webView](QWebEnginePage::WebAction action, bool enabled) {
+ if (currentIndex() == indexOf(webView))
+ emit webActionEnabledChanged(action,enabled);
+ });
+ connect(webView, &QWebEngineView::loadStarted, [this, webView]() {
+ int index = indexOf(webView);
+ if (index != -1) {
+ QIcon icon(QLatin1String(":loading.gif"));
+ setTabIcon(index, icon);
+ }
+ });
+ connect(webPage, &QWebEnginePage::windowCloseRequested, [this, webView]() {
+ int index = indexOf(webView);
+ if (index >= 0)
+ closeTab(index);
+ });
+}
+
+WebView *TabWidget::createTab(bool makeCurrent)
+{
+ WebView *webView = new WebView;
+ WebPage *webPage = new WebPage(QWebEngineProfile::defaultProfile(), webView);
+ webView->setPage(webPage);
+ setupView(webView);
+ addTab(webView, tr("(Untitled)"));
+ if (makeCurrent)
+ setCurrentWidget(webView);
+ return webView;
+}
+
+void TabWidget::reloadAllTabs()
+{
+ for (int i = 0; i < count(); ++i)
+ webView(i)->reload();
+}
+
+void TabWidget::closeOtherTabs(int index)
+{
+ for (int i = count() - 1; i > index; --i)
+ closeTab(i);
+ for (int i = index - 1; i >= 0; --i)
+ closeTab(i);
+}
+
+void TabWidget::closeTab(int index)
+{
+ if (WebView *view = webView(index)) {
+ bool hasFocus = view->hasFocus();
+ removeTab(index);
+ if (hasFocus && count() > 0)
+ currentWebView()->setFocus();
+ if (count() == 0)
+ createTab();
+ view->deleteLater();
+ }
+}
+
+void TabWidget::cloneTab(int index)
+{
+ if (WebView *view = webView(index)) {
+ WebView *tab = createTab(false);
+ tab->setUrl(view->url());
+ }
+}
+
+void TabWidget::setUrl(const QUrl &url)
+{
+ if (WebView *view = currentWebView()) {
+ view->setUrl(url);
+ view->setFocus();
+ }
+}
+
+void TabWidget::triggerWebPageAction(QWebEnginePage::WebAction action)
+{
+ if (WebView *webView = currentWebView()) {
+ webView->triggerPageAction(action);
+ webView->setFocus();
+ }
+}
+
+void TabWidget::nextTab()
+{
+ int next = currentIndex() + 1;
+ if (next == count())
+ next = 0;
+ setCurrentIndex(next);
+}
+
+void TabWidget::previousTab()
+{
+ int next = currentIndex() - 1;
+ if (next < 0)
+ next = count() - 1;
+ setCurrentIndex(next);
+}
+
+void TabWidget::reloadTab(int index)
+{
+ if (WebView *view = webView(index))
+ view->reload();
+}