// Copyright (C) 2013 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package com.google.gerrit.client.change;

import com.google.gerrit.reviewdb.client.Change;
import com.google.gwt.event.logical.shared.CloseEvent;
import com.google.gwt.event.logical.shared.CloseHandler;
import com.google.gwt.user.client.ui.PopupPanel;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwtexpui.globalkey.client.GlobalKey;
import com.google.gwtexpui.user.client.PluginSafePopupPanel;

class EditMessageAction {
  private final Change.Id changeId;
  private final String revision;
  private final String originalMessage;
  private final ChangeScreen2.Style style;
  private final Widget editMessageButton;
  private final Widget replyButton;

  private EditMessageBox editBox;
  private PopupPanel popup;

  EditMessageAction(
      Change.Id changeId,
      String revision,
      String originalMessage,
      ChangeScreen2.Style style,
      Widget editButton,
      Widget replyButton) {
    this.changeId = changeId;
    this.revision = revision;
    this.originalMessage = originalMessage;
    this.style = style;
    this.editMessageButton = editButton;
    this.replyButton = replyButton;
  }

  void onEdit() {
    if (popup != null) {
      popup.hide();
      return;
    }

    if (editBox == null) {
      editBox = new EditMessageBox(
          changeId,
          revision,
          originalMessage);
    }

    final PluginSafePopupPanel p = new PluginSafePopupPanel(true);
    p.setStyleName(style.replyBox());
    p.addAutoHidePartner(editMessageButton.getElement());
    p.addCloseHandler(new CloseHandler<PopupPanel>() {
      @Override
      public void onClose(CloseEvent<PopupPanel> event) {
        if (popup == p) {
          popup = null;
        }
      }
    });
    p.add(editBox);
    p.showRelativeTo(replyButton);
    GlobalKey.dialog(p);
    popup = p;
  }
}