On demand plugins are now per-page, not per-object.

Traverse the frame tree and enable all plugins currently on the page. Remember
the setting for any future plugins that are created. Reset the setting in
makeRepresentation as that seems to be called for all new documents.

Bug: 2564543
Change-Id: I558f068992719ee0236ba40f76b918b10cfe0ed9

3 files changed, 36 insertions, 4 deletions

diff --git a/WebCore/rendering/RenderView.h b/WebCore/rendering/RenderView.h
index c287579..faa2465 100644
--- a/WebCore/rendering/RenderView.h
+++ b/WebCore/rendering/RenderView.h
@@ -105,6 +105,9 @@ public:
     void updateWidgetPositions();
     void addWidget(RenderWidget*);
     void removeWidget(RenderWidget*);
+#ifdef ANDROID_PLUGINS
+    const HashSet<RenderWidget*>& widgets() const { return m_widgets; }
+#endif
 
     // layoutDelta is used transiently during layout to store how far an object has moved from its
     // last layout location, in order to repaint correctly.
diff --git a/WebKit/android/WebCoreSupport/FrameLoaderClientAndroid.cpp b/WebKit/android/WebCoreSupport/FrameLoaderClientAndroid.cpp
index 424617b..9112afe 100644
--- a/WebKit/android/WebCoreSupport/FrameLoaderClientAndroid.cpp
+++ b/WebKit/android/WebCoreSupport/FrameLoaderClientAndroid.cpp
@@ -56,6 +56,8 @@
 #include "PluginWidget.h"
 #include "ProgressTracker.h"
 #include "RenderPart.h"
+#include "RenderView.h"
+#include "RenderWidget.h"
 #include "ResourceError.h"
 #include "ResourceHandle.h"
 #include "ResourceHandleInternal.h"
@@ -84,7 +86,8 @@ FrameLoaderClientAndroid::FrameLoaderClientAndroid(WebFrame* webframe)
     : m_frame(NULL)
     , m_webFrame(webframe)
     , m_manualLoader(NULL)
-    , m_hasSentResponseToPlugin(false) {
+    , m_hasSentResponseToPlugin(false)
+    , m_onDemandPluginsEnabled(false) {
     Retain(m_webFrame);
 }
 
@@ -108,6 +111,7 @@ bool FrameLoaderClientAndroid::hasWebView() const {
 }
 
 void FrameLoaderClientAndroid::makeRepresentation(DocumentLoader*) {
+    m_onDemandPluginsEnabled = false;
     // don't use representation
     verifiedOk();
 }
@@ -1071,6 +1075,29 @@ public:
         if (event->type() != eventNames().clickEvent)
             return;
 
+        Frame* frame = m_parent->page()->mainFrame();
+        while (frame) {
+            RenderView* view = frame->contentRenderer();
+            const HashSet<RenderWidget*> widgets = view->widgets();
+            HashSet<RenderWidget*>::const_iterator it = widgets.begin();
+            HashSet<RenderWidget*>::const_iterator end = widgets.end();
+            for (; it != end; ++it) {
+                Widget* widget = (*it)->widget();
+                // PluginWidget is used only with PluginToggleWidget
+                if (widget->isPluginWidget()) {
+                    PluginToggleWidget* ptw =
+                            static_cast<PluginToggleWidget*>(widget);
+                    ptw->swapPlugin(*it);
+                }
+            }
+            frame = frame->tree()->traverseNext();
+        }
+    }
+
+    void swapPlugin(RenderWidget* renderer) {
+        typedef FrameLoaderClientAndroid FLCA;
+        FLCA* client = static_cast<FLCA*>(m_parent->loader()->client());
+        client->enableOnDemandPlugins();
         WTF::PassRefPtr<PluginView> prpWidget =
                 PluginView::create(m_parent.get(),
                                    m_size,
@@ -1081,8 +1108,6 @@ public:
                                    m_mimeType,
                                    m_loadManually);
         RefPtr<Widget> myProtector(this);
-        RenderWidget* renderer =
-                static_cast<RenderWidget*>(m_element->renderer());
         prpWidget->focusPluginElement();
         renderer->setWidget(prpWidget);
     }
@@ -1121,7 +1146,8 @@ WTF::PassRefPtr<Widget> FrameLoaderClientAndroid::createPlugin(
     Settings* settings = m_frame->settings();
     // Do the placeholder if plugins are on-demand and there is a plugin for the
     // given mime type.
-    if (settings && settings->arePluginsOnDemand() && plugin) {
+    if (settings && settings->arePluginsOnDemand() && plugin &&
+            !m_onDemandPluginsEnabled) {
         return adoptRef(new PluginToggleWidget(m_frame, size, element, url,
                     names, values, mimeType, loadManually));
     }
diff --git a/WebKit/android/WebCoreSupport/FrameLoaderClientAndroid.h b/WebKit/android/WebCoreSupport/FrameLoaderClientAndroid.h
index 2fb552c..3b754b8 100644
--- a/WebKit/android/WebCoreSupport/FrameLoaderClientAndroid.h
+++ b/WebKit/android/WebCoreSupport/FrameLoaderClientAndroid.h
@@ -208,12 +208,15 @@ namespace android {
         
         // FIXME: this doesn't really go here, but it's better than Frame
         CacheBuilder& getCacheBuilder() { return m_cacheBuilder; }
+
+        void enableOnDemandPlugins() { m_onDemandPluginsEnabled = true; }
     private:
         CacheBuilder        m_cacheBuilder;
         Frame*              m_frame;
         WebFrame*           m_webFrame;
         PluginManualLoader* m_manualLoader;
         bool                m_hasSentResponseToPlugin;
+        bool                m_onDemandPluginsEnabled;
 
         enum ResourceErrors {
             InternalErrorCancelled = -99,