| // 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_GESTURE_TEXT_SELECTOR_H_ |
| #define CONTENT_BROWSER_RENDERER_HOST_INPUT_GESTURE_TEXT_SELECTOR_H_ |
| |
| #include "base/gtest_prod_util.h" |
| #include "base/macros.h" |
| #include "base/time/time.h" |
| #include "content/common/content_export.h" |
| |
| namespace ui { |
| struct GestureEventData; |
| class MotionEvent; |
| } |
| |
| namespace content { |
| class GestureTextSelectorTest; |
| |
| // Interface with which GestureTextSelector can select, unselect, show |
| // selection handles, or long press. |
| class CONTENT_EXPORT GestureTextSelectorClient { |
| public: |
| virtual ~GestureTextSelectorClient() {} |
| |
| virtual void ShowSelectionHandlesAutomatically() = 0; |
| virtual void SelectRange(float x1, float y1, float x2, float y2) = 0; |
| virtual void Unselect() = 0; |
| virtual void LongPress(base::TimeTicks time, float x, float y) = 0; |
| }; |
| |
| // A class to handle gesture-based text selection, such as when clicking first |
| // button on stylus input. It also generates a synthetic long press gesture on |
| // tap so that a word can be selected or the contextual menu can be shown. |
| class CONTENT_EXPORT GestureTextSelector { |
| public: |
| explicit GestureTextSelector(GestureTextSelectorClient* client); |
| virtual ~GestureTextSelector(); |
| |
| // This should be called after gesture detection but before associated |
| // gestures are dispatched. Returns whether it will consume |event|. |
| bool OnTouchEvent(const ui::MotionEvent& event); |
| |
| // Returns whether it will consume the event. |
| bool OnGestureEvent(const ui::GestureEventData& gesture); |
| |
| private: |
| friend class GestureTextSelectorTest; |
| FRIEND_TEST_ALL_PREFIXES(GestureTextSelectorTest, |
| ShouldStartTextSelection); |
| |
| static bool ShouldStartTextSelection(const ui::MotionEvent& event); |
| |
| GestureTextSelectorClient* client_; |
| bool text_selection_triggered_; |
| float anchor_x_; |
| float anchor_y_; |
| |
| DISALLOW_COPY_AND_ASSIGN(GestureTextSelector); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_GESTURE_TEXT_SELECTOR_H_ |