Expose WebPageImportanceSignals to embedder
This CL exposes WebPageImportanceSignals to embedder (Chromium content).
We plan to have Chromium tab discarding logic make decisions based on this.
BUG=520838
Review URL: https://codereview.chromium.org/1345023002
git-svn-id: svn://svn.chromium.org/blink/trunk/public@202436 bbb929c8-8fbe-4397-9dbb-9b2b20218538
diff --git a/web/WebPageImportanceSignals.h b/web/WebPageImportanceSignals.h
index 6e50ff9..7328c43 100644
--- a/web/WebPageImportanceSignals.h
+++ b/web/WebPageImportanceSignals.h
@@ -9,6 +9,8 @@
namespace blink {
+class WebViewClient;
+
// WebPageImportanceSignals indicate the importance of the page state to user.
// This signal is propagated to embedder so that it can prioritize preserving
// state of certain page over the others.
@@ -17,15 +19,18 @@
WebPageImportanceSignals() { reset(); }
bool hadFormInteraction() const { return m_hadFormInteraction; }
- void setHadFormInteraction() { m_hadFormInteraction = true; }
+ void setHadFormInteraction();
BLINK_EXPORT void reset();
#if BLINK_IMPLEMENTATION
void onCommitLoad();
#endif
+ void setObserver(WebViewClient* observer) { m_observer = observer; }
+
private:
bool m_hadFormInteraction : 1;
+ WebViewClient* m_observer = nullptr;
};
} // namespace blink
diff --git a/web/WebView.h b/web/WebView.h
index fac145a..1bce1b2 100644
--- a/web/WebView.h
+++ b/web/WebView.h
@@ -50,6 +50,7 @@
class WebDragData;
class WebFrame;
class WebHitTestResult;
+class WebPageImportanceSignals;
class WebPageOverlay;
class WebPrerendererClient;
class WebSettings;
@@ -58,10 +59,10 @@
class WebViewClient;
struct WebActiveWheelFlingParameters;
struct WebDeviceEmulationParams;
+struct WebFloatPoint;
struct WebMediaPlayerAction;
struct WebPluginAction;
struct WebPoint;
-struct WebFloatPoint;
struct WebWindowFeatures;
class WebView : public WebWidget {
@@ -455,6 +456,9 @@
// Overlay this WebView with a solid color.
virtual void setPageOverlayColor(WebColor) = 0;
+ // Page Importance Signals ----------------------------------------------
+
+ virtual WebPageImportanceSignals* pageImportanceSignals() { return nullptr; }
// i18n -----------------------------------------------------------------
diff --git a/web/WebViewClient.h b/web/WebViewClient.h
index d690585..2e8e4ab 100644
--- a/web/WebViewClient.h
+++ b/web/WebViewClient.h
@@ -115,6 +115,9 @@
// A data url from <canvas> or <img> is passed to the method's argument.
virtual void saveImageFromDataURL(const WebString&) { }
+ // Called when PageImportanceSignals for the WebView is updated.
+ virtual void pageImportanceSignalsChanged() { }
+
// Editing -------------------------------------------------------------
// These methods allow the client to intercept and overrule editing
