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/*
* Copyright (C) 2006, 2007 Apple, Inc. All rights reserved.
* Copyright (C) 2012 Google, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "third_party/blink/renderer/core/editing/editor.h"
#include "third_party/blink/public/common/input/web_input_event.h"
#include "third_party/blink/renderer/core/editing/commands/editor_command.h"
#include "third_party/blink/renderer/core/editing/editing_behavior.h"
#include "third_party/blink/renderer/core/editing/editing_utilities.h"
#include "third_party/blink/renderer/core/editing/frame_selection.h"
#include "third_party/blink/renderer/core/editing/ime/edit_context.h"
#include "third_party/blink/renderer/core/editing/ime/input_method_controller.h"
#include "third_party/blink/renderer/core/events/keyboard_event.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/frame/local_frame_client.h"
namespace blink {
bool Editor::HandleEditingKeyboardEvent(KeyboardEvent* evt) {
const WebKeyboardEvent* key_event = evt->KeyEvent();
if (!key_event)
return false;
String command_name = Behavior().InterpretKeyEvent(*evt);
const EditorCommand command = CreateCommand(command_name);
if (key_event->GetType() == WebInputEvent::Type::kRawKeyDown) {
// WebKit doesn't have enough information about mode to decide how
// commands that just insert text if executed via Editor should be treated,
// so we leave it upon WebCore to either handle them immediately
// (e.g. Tab that changes focus) or let a keypress event be generated
// (e.g. Tab that inserts a Tab character, or Enter).
if (command.IsTextInsertion() || command_name.IsEmpty())
return false;
return command.Execute(evt);
}
if (command.Execute(evt))
return true;
if (!Behavior().ShouldInsertCharacter(*evt))
return false;
// If EditContext is active, redirect text to EditContext, otherwise, send
// text to the focused element.
auto* edit_context =
GetFrame().GetInputMethodController().GetActiveEditContext();
if (edit_context) {
if (DispatchBeforeInputInsertText(evt->target()->ToNode(),
key_event->text) !=
DispatchEventResult::kNotCanceled)
return true;
WebString text(WTF::String(key_event->text));
edit_context->InsertText(text);
return true;
}
if (!CanEdit())
return false;
const Element* const focused_element =
frame_->GetDocument()->FocusedElement();
if (!focused_element) {
// We may lose focused element by |command.execute(evt)|.
return false;
}
// We should not insert text at selection start if selection doesn't have
// focus.
if (!frame_->Selection().SelectionHasFocus())
return false;
// Return true to prevent default action. e.g. Space key scroll.
if (DispatchBeforeInputInsertText(evt->target()->ToNode(), key_event->text) !=
DispatchEventResult::kNotCanceled)
return true;
return InsertText(key_event->text, evt);
}
void Editor::HandleKeyboardEvent(KeyboardEvent* evt) {
// Give the embedder a chance to handle the keyboard event.
if (frame_->Client()->HandleCurrentKeyboardEvent() ||
HandleEditingKeyboardEvent(evt)) {
evt->SetDefaultHandled();
}
}
} // namespace blink
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