| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_SELECTION_CONTROLLER_H_ |
| #define CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_SELECTION_CONTROLLER_H_ |
| |
| #include "cc/output/viewport_selection_bound.h" |
| #include "content/browser/renderer_host/input/selection_event_type.h" |
| #include "content/browser/renderer_host/input/touch_handle.h" |
| #include "content/common/content_export.h" |
| #include "ui/gfx/geometry/point_f.h" |
| #include "ui/gfx/geometry/rect_f.h" |
| |
| namespace blink { |
| class WebInputEvent; |
| } |
| |
| namespace ui { |
| class MotionEvent; |
| } |
| |
| namespace content { |
| |
| // Interface through which |TouchSelectionController| issues selection-related |
| // commands, notifications and requests. |
| class CONTENT_EXPORT TouchSelectionControllerClient { |
| public: |
| virtual ~TouchSelectionControllerClient() {} |
| |
| virtual bool SupportsAnimation() const = 0; |
| virtual void SetNeedsAnimate() = 0; |
| virtual void MoveCaret(const gfx::PointF& position) = 0; |
| virtual void SelectBetweenCoordinates(const gfx::PointF& start, |
| const gfx::PointF& end) = 0; |
| virtual void OnSelectionEvent(SelectionEventType event, |
| const gfx::PointF& position) = 0; |
| virtual scoped_ptr<TouchHandleDrawable> CreateDrawable() = 0; |
| }; |
| |
| // Controller for manipulating text selection via touch input. |
| class CONTENT_EXPORT TouchSelectionController : public TouchHandleClient { |
| public: |
| TouchSelectionController(TouchSelectionControllerClient* client, |
| base::TimeDelta tap_timeout, |
| float tap_slop); |
| virtual ~TouchSelectionController(); |
| |
| // To be called when the selection bounds have changed. |
| // Note that such updates will trigger handle updates only if preceded |
| // by an appropriate call to allow automatic showing. |
| void OnSelectionBoundsChanged(const cc::ViewportSelectionBound& start, |
| const cc::ViewportSelectionBound& end); |
| |
| // Allows touch-dragging of the handle. |
| // Returns true iff the event was consumed, in which case the caller should |
| // cease further handling of the event. |
| bool WillHandleTouchEvent(const ui::MotionEvent& event); |
| |
| // To be called before forwarding a tap event. This allows automatically |
| // showing the insertion handle from subsequent bounds changes. |
| void OnTapEvent(); |
| |
| // To be called before forwarding a longpress event. This allows automatically |
| // showing the selection or insertion handles from subsequent bounds changes. |
| void OnLongPressEvent(); |
| |
| // Hide the handles and suppress bounds updates until the next explicit |
| // showing allowance. |
| void HideAndDisallowShowingAutomatically(); |
| |
| // Override the handle visibility according to |hidden|. |
| void SetTemporarilyHidden(bool hidden); |
| |
| // To be called when the editability of the focused region changes. |
| void OnSelectionEditable(bool editable); |
| |
| // To be called when the contents of the focused region changes. |
| void OnSelectionEmpty(bool empty); |
| |
| // Ticks an active animation, as requested to the client by |SetNeedsAnimate|. |
| // Returns true if an animation is active and requires further ticking. |
| bool Animate(base::TimeTicks animate_time); |
| |
| private: |
| enum InputEventType { TAP, LONG_PRESS, INPUT_EVENT_TYPE_NONE }; |
| |
| // TouchHandleClient implementation. |
| virtual void OnHandleDragBegin(const TouchHandle& handle) OVERRIDE; |
| virtual void OnHandleDragUpdate(const TouchHandle& handle, |
| const gfx::PointF& new_position) OVERRIDE; |
| virtual void OnHandleDragEnd(const TouchHandle& handle) OVERRIDE; |
| virtual void OnHandleTapped(const TouchHandle& handle) OVERRIDE; |
| virtual void SetNeedsAnimate() OVERRIDE; |
| virtual scoped_ptr<TouchHandleDrawable> CreateDrawable() OVERRIDE; |
| virtual base::TimeDelta GetTapTimeout() const OVERRIDE; |
| virtual float GetTapSlop() const OVERRIDE; |
| |
| void ShowInsertionHandleAutomatically(); |
| void ShowSelectionHandlesAutomatically(); |
| |
| void OnInsertionChanged(); |
| void OnSelectionChanged(); |
| |
| void ActivateInsertion(); |
| void DeactivateInsertion(); |
| void ActivateSelection(); |
| void DeactivateSelection(); |
| void ResetCachedValuesIfInactive(); |
| |
| const gfx::PointF& GetStartPosition() const; |
| const gfx::PointF& GetEndPosition() const; |
| gfx::Vector2dF GetStartLineOffset() const; |
| gfx::Vector2dF GetEndLineOffset() const; |
| bool GetStartVisible() const; |
| bool GetEndVisible() const; |
| TouchHandle::AnimationStyle GetAnimationStyle(bool was_active) const; |
| |
| TouchSelectionControllerClient* const client_; |
| const base::TimeDelta tap_timeout_; |
| const float tap_slop_; |
| |
| InputEventType response_pending_input_event_; |
| |
| cc::ViewportSelectionBound start_; |
| cc::ViewportSelectionBound end_; |
| TouchHandleOrientation start_orientation_; |
| TouchHandleOrientation end_orientation_; |
| |
| scoped_ptr<TouchHandle> insertion_handle_; |
| bool is_insertion_active_; |
| bool activate_insertion_automatically_; |
| |
| scoped_ptr<TouchHandle> start_selection_handle_; |
| scoped_ptr<TouchHandle> end_selection_handle_; |
| gfx::PointF fixed_handle_position_; |
| bool is_selection_active_; |
| bool activate_selection_automatically_; |
| |
| bool selection_empty_; |
| bool selection_editable_; |
| |
| bool temporarily_hidden_; |
| |
| DISALLOW_COPY_AND_ASSIGN(TouchSelectionController); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_SELECTION_CONTROLLER_H_ |