// Copyright (C) 2010 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.changes;

import com.google.gerrit.client.Gerrit;
import com.google.gerrit.client.ui.CommentLinkProcessor;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.ScrollPanel;
import com.google.gwtexpui.safehtml.client.SafeHtml;
import com.google.gwtexpui.safehtml.client.SafeHtmlBuilder;

public class CommitMessageBlock extends Composite {
  private final HTML description;

  public CommitMessageBlock() {
    this(null);
  }

  public CommitMessageBlock(String height) {
    description = new HTML();
    description.setStyleName(Gerrit.RESOURCES.css().changeScreenDescription());
    if (height != null) {
      ScrollPanel scrollPanel = new ScrollPanel();
      scrollPanel.setHeight(height);
      scrollPanel.add(description);
      initWidget(scrollPanel);
    } else {
      initWidget(description);
    }
  }

  public void display(final String commitMessage) {
    SafeHtml msg = new SafeHtmlBuilder().append(commitMessage);
    msg = msg.linkify();
    msg = CommentLinkProcessor.apply(msg);
    msg = new SafeHtmlBuilder().openElement("p").append(msg).closeElement("p");
    msg = msg.replaceAll("\n\n", "</p><p>");
    msg = msg.replaceAll("\n", "<br />");
    SafeHtml.set(description, msg);
  }
}