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// Copyright (c) 2011 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 "chrome/browser/extensions/extension_input_api.h"
#include <string>
#include "base/string_util.h"
#include "base/values.h"
#include "chrome/browser/extensions/key_identifier_conversion_views.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/browser/ui/views/frame/browser_view.h"
#include "views/events/event.h"
#include "views/ime/input_method.h"
#include "views/widget/widget.h"
namespace {
// Keys.
const char kType[] = "type";
const char kKeyIdentifier[] = "keyIdentifier";
const char kAlt[] = "altKey";
const char kCtrl[] = "ctrlKey";
const char kMeta[] = "metaKey";
const char kShift[] = "shiftKey";
const char kKeyDown[] = "keydown";
const char kKeyUp[] = "keyup";
// Errors.
const char kUnknownEventTypeError[] = "Unknown event type.";
const char kUnknownOrUnsupportedKeyIdentiferError[] = "Unknown or unsupported "
"key identifier.";
const char kUnsupportedModifier[] = "Unsupported modifier.";
const char kNoValidRecipientError[] = "No valid recipient for event.";
const char kKeyEventUnprocessedError[] = "Event was not handled.";
ui::EventType GetTypeFromString(const std::string& type) {
if (type == kKeyDown) {
return ui::ET_KEY_PRESSED;
} else if (type == kKeyUp) {
return ui::ET_KEY_RELEASED;
}
return ui::ET_UNKNOWN;
}
} // namespace
void InputFunction::Run() {
SendResponse(RunImpl());
}
views::Widget* SendKeyboardEventInputFunction::GetTopLevelWidget() {
Browser* browser = GetCurrentBrowser();
if (!browser)
return NULL;
BrowserWindow* window = browser->window();
if (!window)
return NULL;
BrowserView* browser_view = BrowserView::GetBrowserViewForNativeWindow(
window->GetNativeHandle());
return browser_view ? browser_view->GetWidget() : NULL;
}
bool SendKeyboardEventInputFunction::RunImpl() {
DictionaryValue* args;
EXTENSION_FUNCTION_VALIDATE(args_->GetDictionary(0, &args));
std::string type_name;
EXTENSION_FUNCTION_VALIDATE(args->GetString(kType, &type_name));
ui::EventType type = GetTypeFromString(type_name);
if (type == ui::ET_UNKNOWN) {
error_ = kUnknownEventTypeError;
return false;
}
std::string identifier;
EXTENSION_FUNCTION_VALIDATE(args->GetString(kKeyIdentifier, &identifier));
TrimWhitespaceASCII(identifier, TRIM_ALL, &identifier);
const views::KeyEvent& prototype_event =
KeyEventFromKeyIdentifier(identifier);
if (prototype_event.key_code() == ui::VKEY_UNKNOWN) {
error_ = kUnknownOrUnsupportedKeyIdentiferError;
return false;
}
bool flag = false;
int flags = prototype_event.flags();
flags |= (args->GetBoolean(kAlt, &flag) && flag) ? ui::EF_ALT_DOWN : 0;
flags |= (args->GetBoolean(kCtrl, &flag) && flag) ? ui::EF_CONTROL_DOWN : 0;
flags |= (args->GetBoolean(kShift, &flag) && flag) ? ui::EF_SHIFT_DOWN : 0;
if (args->GetBoolean(kMeta, &flag) && flag) {
// Views does not have a Meta event flag, so return an error for now.
error_ = kUnsupportedModifier;
return false;
}
views::Widget* widget = GetTopLevelWidget();
if (!widget) {
error_ = kNoValidRecipientError;
return false;
}
views::KeyEvent event(type, prototype_event.key_code(), flags);
views::InputMethod* ime = widget->GetInputMethod();
if (ime) {
ime->DispatchKeyEvent(event);
} else if (!widget->OnKeyEvent(event)) {
error_ = kKeyEventUnprocessedError;
return false;
}
return true;
}
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