Introduce WebInputMethodController to blink

third_party/WebKit/public/web/WebInputMethodController.h

Index: third_party/WebKit/public/web/WebInputMethodController.h
diff --git a/third_party/WebKit/Source/core/frame/DOMVisualViewport.h b/third_party/WebKit/public/web/WebInputMethodController.h
similarity index 57%
copy from third_party/WebKit/Source/core/frame/DOMVisualViewport.h
copy to third_party/WebKit/public/web/WebInputMethodController.h
index 2d3a1b508ecf51394124ee6055b36913d5eb5e52..3e99ec9602ad46a112d70574bb22503edfb6c149 100644
--- a/third_party/WebKit/Source/core/frame/DOMVisualViewport.h
+++ b/third_party/WebKit/public/web/WebInputMethodController.h
@@ -28,49 +28,40 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef DOMVisualViewport_h
-#define DOMVisualViewport_h
+#ifndef WebInputMethodController_h
+#define WebInputMethodController_h
 
-#include "bindings/core/v8/ScriptWrappable.h"
-#include "core/dom/ExecutionContext.h"
-#include "core/events/EventTarget.h"
-#include "platform/heap/Handle.h"
+#include "WebCompositionUnderline.h"
+#include "WebWidget.h"
 
 namespace blink {
 
-class LocalDOMWindow;
-class ExecutionContext;
+class WebString;
+template <typename T>
+class WebVector;
 
-class DOMVisualViewport final : public EventTargetWithInlineData {
-    DEFINE_WRAPPERTYPEINFO();
-public:
-    static DOMVisualViewport* create(LocalDOMWindow* window)
-    {
-        return new DOMVisualViewport(window);
-    }
-
-    ~DOMVisualViewport() override;
-
-    DECLARE_VIRTUAL_TRACE();
+class WebInputMethodController {
 
-    // EventTarget overrides:
-    const AtomicString& interfaceName() const override;
-    ExecutionContext* getExecutionContext() const override;
-
-    double scrollLeft();
-    double scrollTop();
-    double pageX();
-    double pageY();
-    double clientWidth();
-    double clientHeight();
-    double scale();
+public:
+    // Called to inform the WebInputMethodController of a new composition text.
+    // If selectionStart and selectionEnd has the same value, then it indicates
+    // the input caret position. If the text is empty, then the existing
+    // composition text will be canceled.
+    // Returns true if the composition text was set successfully.
+    virtual bool setComposition(
+        const WebString& text,
+        const WebVector<WebCompositionUnderline>& underlines,
+        int selectionStart,
+        int selectionEnd) { return false; }

[lfg, 2016/09/14 19:20:26]

Can you make those functions pure virtual?

[EhsanK, 2016/09/16 15:06:28]

Acknowledged.

 
-private:
-    explicit DOMVisualViewport(LocalDOMWindow*);
+    // Called to inform the WebWidget that deleting the ongoing composition if
+    // any, inserting the specified text, and moving the caret according to
+    // relativeCaretPosition.
+    virtual bool commitText(const WebString& text, int relativeCaretPosition) { return false; }
 
-    Member<LocalDOMWindow> m_window;
+    // Called to inform the WebWidget to confirm an ongoing composition.
+    virtual bool finishComposingText(WebWidget::ConfirmCompositionBehavior selectionBehavior) { return false; }
 };
 
 } // namespace blink
-
-#endif // DOMVisualViewport_h
+#endif