From f1f5170c062c4a96dd986116631a6d8e1fb1d87f Mon Sep 17 00:00:00 2001
From: Zeno Albisser <zeno.albisser@digia.com>
Date: Tue, 18 Jun 2013 17:15:00 +0200
Subject: [PATCH] Disable the back/forward buttons when appropriate.
---
examples/qtquick/quickwindow.qml | 2 ++
examples/widgets/widgetwindow.cpp | 6 ++++--
examples/widgets/widgetwindow.h | 2 ++
lib/qwebcontentsview.cpp | 10 ++++++++++
lib/qwebcontentsview.h | 2 ++
5 files changed, 20 insertions(+), 2 deletions(-)
diff --git a/examples/qtquick/quickwindow.qml b/examples/qtquick/quickwindow.qml
index 7962be141..afaff7c8d 100644
--- a/examples/qtquick/quickwindow.qml
+++ b/examples/qtquick/quickwindow.qml
@@ -20,12 +20,14 @@ ApplicationWindow {
iconName: "go-previous"
iconSource: ":/icons/go-previous.png"
onClicked: webContentsView.goBack()
+ enabled: webContentsView.canGoBack
}
ToolButton {
id: forwardButton
iconName: "go-next"
iconSource: ":/icons/go-next.png"
onClicked: webContentsView.goForward()
+ enabled: webContentsView.canGoForward
}
ToolButton {
id: reloadButton
diff --git a/examples/widgets/widgetwindow.cpp b/examples/widgets/widgetwindow.cpp
index 589ef13c3..a28a6f130 100644
--- a/examples/widgets/widgetwindow.cpp
+++ b/examples/widgets/widgetwindow.cpp
@@ -63,11 +63,11 @@ WidgetWindow::WidgetWindow()
QHBoxLayout* addressBar = new QHBoxLayout;
addressBar->setSpacing(margin); // Bigger buttons, less space between them
- QToolButton* backButton = new QToolButton;
+ backButton = new QToolButton;
backButton->setIcon(QIcon::fromTheme("go-previous"));
addressBar->addWidget(backButton);
- QToolButton* forwardButton = new QToolButton;
+ forwardButton = new QToolButton;
forwardButton->setIcon(QIcon::fromTheme("go-next"));
addressBar->addWidget(forwardButton);
@@ -117,5 +117,7 @@ void WidgetWindow::loadStarted()
void WidgetWindow::loadFinished(bool success)
{
Q_UNUSED(success);
+ forwardButton->setEnabled(m_webView->canGoForward());
+ backButton->setEnabled(m_webView->canGoBack());
reloadButton->setIcon(QIcon::fromTheme("view-refresh"));
}
diff --git a/examples/widgets/widgetwindow.h b/examples/widgets/widgetwindow.h
index 5273d4255..863e8a73f 100644
--- a/examples/widgets/widgetwindow.h
+++ b/examples/widgets/widgetwindow.h
@@ -62,6 +62,8 @@ private Q_SLOTS:
private:
QScopedPointer<QWebContentsView> m_webView;
QLineEdit* addressLineEdit;
+ QToolButton* forwardButton;
+ QToolButton* backButton;
QToolButton* reloadButton;
};
diff --git a/lib/qwebcontentsview.cpp b/lib/qwebcontentsview.cpp
index 323bb3b60..07aa034d5 100644
--- a/lib/qwebcontentsview.cpp
+++ b/lib/qwebcontentsview.cpp
@@ -95,6 +95,16 @@ void QWebContentsView::load(const QUrl& url)
d->webContentsDelegate->web_contents()->GetView()->Focus();
}
+bool QWebContentsView::canGoBack() const
+{
+ return d->webContentsDelegate->web_contents()->GetController().CanGoBack();
+}
+
+bool QWebContentsView::canGoForward() const
+{
+ return d->webContentsDelegate->web_contents()->GetController().CanGoForward();
+}
+
void QWebContentsView::back()
{
d->webContentsDelegate->web_contents()->GetController().GoToOffset(-1);
diff --git a/lib/qwebcontentsview.h b/lib/qwebcontentsview.h
index 6eef056c7..83eefd59e 100644
--- a/lib/qwebcontentsview.h
+++ b/lib/qwebcontentsview.h
@@ -54,6 +54,8 @@ public:
~QWebContentsView();
void load(const QUrl& url);
+ bool canGoBack() const;
+ bool canGoForward() const;
public Q_SLOTS:
void back();
--
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