Index: content/browser/renderer_host/input/touch_selection_controller.cc |
diff --git a/content/browser/renderer_host/input/touch_selection_controller.cc b/content/browser/renderer_host/input/touch_selection_controller.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..4b6ae00eb0dea347b6cc76c7480076ae9802f26a |
--- /dev/null |
+++ b/content/browser/renderer_host/input/touch_selection_controller.cc |
@@ -0,0 +1,344 @@ |
+// 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. |
+ |
+#include "content/browser/renderer_host/input/touch_selection_controller.h" |
+ |
+#include "base/logging.h" |
+#include "third_party/WebKit/public/web/WebInputEvent.h" |
+ |
+namespace content { |
+ |
+TouchSelectionController::TouchSelectionController( |
+ TouchSelectionControllerClient* client) |
+ : client_(client), |
+ start_orientation_(TOUCH_HANDLE_ORIENTATION_UNDEFINED), |
+ start_visible_(false), |
+ end_orientation_(TOUCH_HANDLE_ORIENTATION_UNDEFINED), |
+ end_visible_(false), |
+ is_insertion_active_(false), |
+ activate_insertion_automatically_(false), |
+ is_selection_active_(false), |
+ activate_selection_automatically_(false), |
+ selection_editable_(false), |
+ selection_editable_for_last_update_(false), |
+ temporarily_hidden_(false) { |
+ DCHECK(client_); |
+ HideAndDisallowAutomaticShowing(); |
+} |
+ |
+TouchSelectionController::~TouchSelectionController() { |
+} |
+ |
+void TouchSelectionController::OnSelectionBoundsChanged( |
+ const gfx::RectF& start_rect, |
+ TouchHandleOrientation start_orientation, |
+ bool start_visible, |
+ const gfx::RectF& end_rect, |
+ TouchHandleOrientation end_orientation, |
+ bool end_visible) { |
+ if (!activate_selection_automatically_ && !activate_insertion_automatically_) |
+ return; |
+ |
+ if (start_rect_ == start_rect && end_rect_ == end_rect && |
+ start_orientation_ == start_orientation && |
+ end_orientation_ == end_orientation && start_visible_ == start_visible && |
+ end_visible_ == end_visible && |
+ selection_editable_ == selection_editable_for_last_update_) |
+ return; |
+ |
+ start_rect_ = start_rect; |
+ start_orientation_ = start_orientation; |
+ start_visible_ = start_visible; |
+ end_rect_ = end_rect; |
+ end_orientation_ = end_orientation; |
+ end_visible_ = end_visible; |
+ selection_editable_for_last_update_ = selection_editable_; |
+ |
+ const bool is_selection_dragging = |
+ is_selection_active_ && (start_selection_handle_->is_dragging() || |
+ end_selection_handle_->is_dragging()); |
+ |
+ // It's possible that the bounds temporarily overlap while a selection handle |
+ // is being dragged, incorrectly reporting a CENTER orientation. |
+ // TODO(jdduke): This safeguard is racy, as it's possible the delayed response |
+ // from handle positioning occurs *after* the handle dragging has ceased. |
+ // Instead, prevent selection -> insertion transitions without an intervening |
+ // action or selection clearing of some sort, crbug.com/392696. |
+ if (is_selection_dragging) { |
+ if (start_orientation_ == TOUCH_HANDLE_CENTER) |
+ start_orientation_ = start_selection_handle_->orientation(); |
+ if (end_orientation_ == TOUCH_HANDLE_CENTER) |
+ end_orientation_ = end_selection_handle_->orientation(); |
+ } |
+ |
+ const gfx::PointF start = GetStartPosition(); |
+ const gfx::PointF end = GetEndPosition(); |
+ if (start != end || |
+ (is_selection_dragging && |
+ start_orientation_ != TOUCH_HANDLE_ORIENTATION_UNDEFINED && |
+ end_orientation_ != TOUCH_HANDLE_ORIENTATION_UNDEFINED)) { |
+ OnSelectionChanged(); |
+ return; |
+ } |
+ |
+ if (start_orientation_ == TOUCH_HANDLE_CENTER) { |
+ OnInsertionChanged(); |
+ return; |
+ } |
+ |
+ HideAndDisallowAutomaticShowing(); |
+} |
+ |
+bool TouchSelectionController::WillHandleTouchEvent( |
+ const ui::MotionEvent& event) { |
+ if (is_insertion_active_) { |
+ DCHECK(insertion_handle_); |
+ return insertion_handle_->WillHandleTouchEvent(event); |
+ } |
+ |
+ if (is_selection_active_) { |
+ DCHECK(start_selection_handle_); |
+ DCHECK(end_selection_handle_); |
+ return start_selection_handle_->WillHandleTouchEvent(event) || |
+ end_selection_handle_->WillHandleTouchEvent(event); |
+ } |
+ |
+ return false; |
+} |
+ |
+void TouchSelectionController::ShowInsertionHandleAutomatically() { |
+ if (activate_insertion_automatically_) |
+ return; |
+ activate_insertion_automatically_ = true; |
+ if (!is_insertion_active_ && !is_selection_active_) |
+ ResetCachedValues(); |
+} |
+ |
+void TouchSelectionController::ShowSelectionHandlesAutomatically() { |
+ if (activate_selection_automatically_) |
+ return; |
+ activate_selection_automatically_ = true; |
+ if (!is_insertion_active_ && !is_selection_active_) |
+ ResetCachedValues(); |
+} |
+ |
+void TouchSelectionController::HideAndDisallowAutomaticShowing() { |
+ DeactivateInsertion(); |
+ DeactivateSelection(); |
+ activate_insertion_automatically_ = false; |
+ activate_selection_automatically_ = false; |
+} |
+ |
+void TouchSelectionController::SetTemporarilyHidden(bool hidden) { |
+ if (temporarily_hidden_ == hidden) |
+ return; |
+ temporarily_hidden_ = hidden; |
+ |
+ TouchHandle::AnimationStyle animation_style = GetAnimationStyle(true); |
+ if (is_selection_active_) { |
+ start_selection_handle_->SetVisible(GetStartVisible(), animation_style); |
+ end_selection_handle_->SetVisible(GetEndVisible(), animation_style); |
+ } |
+ if (is_insertion_active_) |
+ insertion_handle_->SetVisible(GetStartVisible(), animation_style); |
+} |
+ |
+void TouchSelectionController::OnSelectionEditable(bool editable) { |
+ if (selection_editable_ == editable) |
+ return; |
+ selection_editable_ = editable; |
+ if (!selection_editable_) |
+ DeactivateInsertion(); |
+} |
+ |
+bool TouchSelectionController::Animate(base::TimeTicks frame_time) { |
+ if (is_insertion_active_) |
+ return insertion_handle_->Animate(frame_time); |
+ |
+ if (is_selection_active_) { |
+ bool needs_animate = start_selection_handle_->Animate(frame_time); |
+ needs_animate |= end_selection_handle_->Animate(frame_time); |
+ return needs_animate; |
+ } |
+ |
+ return false; |
+} |
+ |
+void TouchSelectionController::OnHandleDragBegin(const TouchHandle& handle) { |
+ if (&handle == insertion_handle_.get()) |
+ return; |
+ |
+ if (&handle == start_selection_handle_.get()) { |
+ fixed_handle_position_ = end_selection_handle_->position() - |
+ gfx::Vector2dF(0, GetEndLineHeight() / 2.f); |
+ } else { |
+ fixed_handle_position_ = start_selection_handle_->position() - |
+ gfx::Vector2dF(0, GetStartLineHeight() / 2.f); |
+ } |
+} |
+ |
+void TouchSelectionController::OnHandleDragUpdate(const TouchHandle& handle, |
+ const gfx::PointF& position) { |
+ // As the position corresponds to the bottom left point of the selection |
+ // bound, offset it by half the corresponding line height. |
+ float half_line_height = &handle == end_selection_handle_.get() |
+ ? GetEndLineHeight() / 2.f |
+ : GetStartLineHeight() / 2.f; |
+ gfx::PointF line_position = position - gfx::Vector2dF(0, half_line_height); |
+ if (&handle == insertion_handle_.get()) { |
+ client_->MoveCaret(line_position); |
+ } else { |
+ client_->SelectBetweenCoordinates(fixed_handle_position_, line_position); |
+ } |
+} |
+ |
+void TouchSelectionController::OnHandleDragEnd(const TouchHandle& handle) { |
+} |
+ |
+void TouchSelectionController::OnHandleTapped(const TouchHandle& handle) { |
+ if (insertion_handle_ && &handle == insertion_handle_.get()) |
+ client_->OnSelectionEvent(INSERTION_TAPPED, GetStartPosition()); |
+} |
+ |
+void TouchSelectionController::SetNeedsAnimate() { |
+ client_->SetNeedsAnimate(); |
+} |
+ |
+scoped_ptr<TouchHandleDrawable> TouchSelectionController::CreateDrawable() { |
+ return client_->CreateDrawable(); |
+} |
+ |
+void TouchSelectionController::OnInsertionChanged() { |
+ DeactivateSelection(); |
+ |
+ if (!activate_insertion_automatically_ || !selection_editable_) |
+ return; |
+ |
+ const bool was_active = is_insertion_active_; |
+ const gfx::PointF position = GetStartPosition(); |
+ if (!is_insertion_active_) |
+ ActivateInsertion(); |
+ else |
+ client_->OnSelectionEvent(INSERTION_MOVED, position); |
+ |
+ insertion_handle_->SetVisible(GetStartVisible(), |
+ GetAnimationStyle(was_active)); |
+ insertion_handle_->SetPosition(position); |
+} |
+ |
+void TouchSelectionController::OnSelectionChanged() { |
+ DeactivateInsertion(); |
+ |
+ if (!activate_selection_automatically_) |
+ return; |
+ |
+ const bool was_active = is_selection_active_; |
+ ActivateSelection(); |
+ |
+ const TouchHandle::AnimationStyle animation = GetAnimationStyle(was_active); |
+ start_selection_handle_->SetVisible(GetStartVisible(), animation); |
+ end_selection_handle_->SetVisible(GetEndVisible(), animation); |
+ |
+ start_selection_handle_->SetPosition(GetStartPosition()); |
+ end_selection_handle_->SetPosition(GetEndPosition()); |
+} |
+ |
+void TouchSelectionController::ActivateInsertion() { |
+ DCHECK(!is_selection_active_); |
+ |
+ if (!insertion_handle_) |
+ insertion_handle_.reset(new TouchHandle(this, TOUCH_HANDLE_CENTER)); |
+ |
+ if (!is_insertion_active_) { |
+ is_insertion_active_ = true; |
+ insertion_handle_->SetEnabled(true); |
+ client_->OnSelectionEvent(INSERTION_SHOWN, GetStartPosition()); |
+ } |
+} |
+ |
+void TouchSelectionController::DeactivateInsertion() { |
+ if (!is_insertion_active_) |
+ return; |
+ DCHECK(insertion_handle_); |
+ is_insertion_active_ = false; |
+ insertion_handle_->SetEnabled(false); |
+ client_->OnSelectionEvent(INSERTION_CLEARED, gfx::PointF()); |
+} |
+ |
+void TouchSelectionController::ActivateSelection() { |
+ DCHECK(!is_insertion_active_); |
+ |
+ if (!start_selection_handle_) { |
+ start_selection_handle_.reset(new TouchHandle(this, start_orientation_)); |
+ } else { |
+ start_selection_handle_->SetEnabled(true); |
+ start_selection_handle_->SetOrientation(start_orientation_); |
+ } |
+ |
+ if (!end_selection_handle_) { |
+ end_selection_handle_.reset(new TouchHandle(this, end_orientation_)); |
+ } else { |
+ end_selection_handle_->SetEnabled(true); |
+ end_selection_handle_->SetOrientation(end_orientation_); |
+ } |
+ |
+ if (!is_selection_active_) { |
+ is_selection_active_ = true; |
+ client_->OnSelectionEvent(SELECTION_SHOWN, GetStartPosition()); |
+ } |
+} |
+ |
+void TouchSelectionController::DeactivateSelection() { |
+ if (!is_selection_active_) |
+ return; |
+ DCHECK(start_selection_handle_); |
+ DCHECK(end_selection_handle_); |
+ start_selection_handle_->SetEnabled(false); |
+ end_selection_handle_->SetEnabled(false); |
+ is_selection_active_ = false; |
+ client_->OnSelectionEvent(SELECTION_CLEARED, gfx::PointF()); |
+} |
+ |
+void TouchSelectionController::ResetCachedValues() { |
+ start_rect_ = gfx::RectF(); |
+ end_rect_ = gfx::RectF(); |
+ start_orientation_ = TOUCH_HANDLE_ORIENTATION_UNDEFINED; |
+ end_orientation_ = TOUCH_HANDLE_ORIENTATION_UNDEFINED; |
+ start_visible_ = false; |
+ end_visible_ = false; |
+ selection_editable_for_last_update_ = false; |
+} |
+ |
+gfx::PointF TouchSelectionController::GetStartPosition() const { |
+ return start_rect_.bottom_left(); |
+} |
+ |
+gfx::PointF TouchSelectionController::GetEndPosition() const { |
+ return end_rect_.bottom_left(); |
+} |
+ |
+float TouchSelectionController::GetStartLineHeight() const { |
+ return start_rect_.height(); |
+} |
+ |
+float TouchSelectionController::GetEndLineHeight() const { |
+ return end_rect_.height(); |
+} |
+ |
+bool TouchSelectionController::GetStartVisible() const { |
+ return start_visible_ && !temporarily_hidden_; |
+} |
+ |
+bool TouchSelectionController::GetEndVisible() const { |
+ return end_visible_ && !temporarily_hidden_; |
+} |
+ |
+TouchHandle::AnimationStyle TouchSelectionController::GetAnimationStyle( |
+ bool was_active) const { |
+ return was_active && client_->SupportsAnimation() |
+ ? TouchHandle::ANIMATION_SMOOTH |
+ : TouchHandle::ANIMATION_NONE; |
+} |
+ |
+} // namespace content |