Introduce devtools frontend

Makes it possible to use devtools without using the remote-debugger

Task-number: QTBUG-47899
Task-number: QTBUG-50725
Task-number: QTBUG-50766
Change-Id: Id32e13f773372d9917599ebbb64ab4af61bbf1d8
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

3 files changed, 67 insertions, 0 deletions

diff --git a/src/webengine/api/qquickwebengineview.cpp b/src/webengine/api/qquickwebengineview.cpp
index 0636d8471..2721039ae 100644
--- a/src/webengine/api/qquickwebengineview.cpp
+++ b/src/webengine/api/qquickwebengineview.cpp
@@ -823,6 +823,11 @@ void QQuickWebEngineViewPrivate::adoptWebContents(WebContentsAdapter *webContent
     if (m_webChannel)
         adapter->setWebChannel(m_webChannel, m_webChannelWorld);
 
+    if (devToolsView && devToolsView->d_ptr->adapter)
+        adapter->openDevToolsFrontend(devToolsView->d_ptr->adapter);
+    else if (inspectedView && inspectedView->d_ptr->adapter)
+        inspectedView->d_ptr->adapter->openDevToolsFrontend(adapter);
+
     // set initial background color if non-default
     if (m_backgroundColor != Qt::white)
         adapter->backgroundColorChanged();
@@ -882,6 +887,8 @@ void QQuickWebEngineViewPrivate::ensureContentsAdapter()
             adapter->setWebChannel(m_webChannel, m_webChannelWorld);
         if (explicitUrl.isValid())
             adapter->load(explicitUrl);
+        if (inspectedView)
+            inspectedView->d_ptr->adapter->openDevToolsFrontend(adapter);
         // push down the page's user scripts
         Q_FOREACH (QQuickWebEngineScript *script, m_userScripts)
             script->d_func()->bind(browserContextAdapter()->userResourceController(), adapter.data());
@@ -1419,6 +1426,54 @@ void QQuickWebEngineView::setWebChannelWorld(uint webChannelWorld)
     Q_EMIT webChannelWorldChanged(webChannelWorld);
 }
 
+QQuickWebEngineView *QQuickWebEngineView::inspectedView() const
+{
+    Q_D(const QQuickWebEngineView);
+    return d->inspectedView;
+}
+
+void QQuickWebEngineView::setInspectedView(QQuickWebEngineView *view)
+{
+    Q_D(QQuickWebEngineView);
+    if (d->inspectedView == view)
+        return;
+    QQuickWebEngineView *oldView = d->inspectedView;
+    d->inspectedView = nullptr;
+    if (oldView)
+        oldView->setDevToolsView(nullptr);
+    d->inspectedView = view;
+    if (view)
+        view->setDevToolsView(this);
+    Q_EMIT inspectedViewChanged();
+}
+
+QQuickWebEngineView *QQuickWebEngineView::devToolsView() const
+{
+    Q_D(const QQuickWebEngineView);
+    return d->devToolsView;
+}
+
+void QQuickWebEngineView::setDevToolsView(QQuickWebEngineView *devToolsView)
+{
+    Q_D(QQuickWebEngineView);
+    if (d->devToolsView == devToolsView)
+        return;
+    QQuickWebEngineView *oldView = d->devToolsView;
+    d->devToolsView = nullptr;
+    if (oldView)
+        oldView->setInspectedView(nullptr);
+    d->devToolsView = devToolsView;
+    if (devToolsView)
+        devToolsView->setInspectedView(this);
+    if (d->adapter) {
+        if (devToolsView)
+            d->adapter->openDevToolsFrontend(devToolsView->d_ptr->adapter);
+        else
+            d->adapter->closeDevToolsFrontend();
+    }
+    Q_EMIT devToolsViewChanged();
+}
+
 void QQuickWebEngineView::grantFeaturePermission(const QUrl &securityOrigin, QQuickWebEngineView::Feature feature, bool granted)
 {
     if (!d_ptr->adapter)
diff --git a/src/webengine/api/qquickwebengineview_p.h b/src/webengine/api/qquickwebengineview_p.h
index ee7e01f26..275503d14 100644
--- a/src/webengine/api/qquickwebengineview_p.h
+++ b/src/webengine/api/qquickwebengineview_p.h
@@ -148,6 +148,8 @@ class Q_WEBENGINE_PRIVATE_EXPORT QQuickWebEngineView : public QQuickItem {
     Q_PROPERTY(bool recentlyAudible READ recentlyAudible NOTIFY recentlyAudibleChanged FINAL REVISION 3)
     Q_PROPERTY(uint webChannelWorld READ webChannelWorld WRITE setWebChannelWorld NOTIFY webChannelWorldChanged REVISION 3 FINAL)
 
+    Q_PROPERTY(QQuickWebEngineView *inspectedView READ inspectedView WRITE setInspectedView NOTIFY inspectedViewChanged REVISION 7 FINAL)
+    Q_PROPERTY(QQuickWebEngineView *devToolsView READ devToolsView WRITE setDevToolsView NOTIFY devToolsViewChanged REVISION 7 FINAL)
 #ifdef ENABLE_QML_TESTSUPPORT_API
     Q_PROPERTY(QQuickWebEngineTestSupport *testSupport READ testSupport WRITE setTestSupport NOTIFY testSupportChanged FINAL)
 #endif
@@ -500,6 +502,11 @@ public:
 
     bool activeFocusOnPress() const;
 
+    void setInspectedView(QQuickWebEngineView *);
+    QQuickWebEngineView *inspectedView() const;
+    void setDevToolsView(QQuickWebEngineView *);
+    QQuickWebEngineView *devToolsView() const;
+
 public Q_SLOTS:
     void runJavaScript(const QString&, const QJSValue & = QJSValue());
     Q_REVISION(3) void runJavaScript(const QString&, quint32 worldId, const QJSValue & = QJSValue());
@@ -557,6 +564,8 @@ Q_SIGNALS:
     Q_REVISION(5) void pdfPrintingFinished(const QString &filePath, bool success);
     Q_REVISION(7) void quotaPermissionRequested(const QQuickWebEngineQuotaPermissionRequest &request);
     Q_REVISION(7) void geometryChangeRequested(const QRect &geometry, const QRect &frameGeometry);
+    Q_REVISION(7) void inspectedViewChanged();
+    Q_REVISION(7) void devToolsViewChanged();
 
 #ifdef ENABLE_QML_TESTSUPPORT_API
     void testSupportChanged();
diff --git a/src/webengine/api/qquickwebengineview_p_p.h b/src/webengine/api/qquickwebengineview_p_p.h
index 708725787..a30614b2f 100644
--- a/src/webengine/api/qquickwebengineview_p_p.h
+++ b/src/webengine/api/qquickwebengineview_p_p.h
@@ -54,6 +54,7 @@
 #include "qquickwebengineview_p.h"
 #include "web_contents_adapter_client.h"
 
+#include <QPointer>
 #include <QScopedPointer>
 #include <QSharedData>
 #include <QString>
@@ -185,6 +186,8 @@ public:
     QMap<quint64, QJSValue> m_callbacks;
     QList<QSharedPointer<CertificateErrorController> > m_certificateErrorControllers;
     QQmlWebChannel *m_webChannel;
+    QPointer<QQuickWebEngineView> inspectedView;
+    QPointer<QQuickWebEngineView> devToolsView;
     uint m_webChannelWorld;
 
 private: