Change style of commit message box display and use UiBinder.

Put a box around the commit message with a title and emphasis on the
commit summary. The <pre> element for the body is hidden if only the
summary is submitted.

Changed CommitMessageBlock widget to use UiBinder.

Change-Id: I1a8642c99e1b2e57cfe04f26e6e359b9ad0476fe

gerrit-gwtui/src/main/java/com/google/gerrit/client/changes/CommitMessageBlock.java

@@ -14,29 +14,57 @@
 
 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.core.client.GWT;
+import com.google.gwt.dom.client.PreElement;
+import com.google.gwt.dom.client.Style.Display;
+import com.google.gwt.uibinder.client.UiBinder;
+import com.google.gwt.uibinder.client.UiField;
+import com.google.gwt.user.client.ui.HTMLPanel;
 import com.google.gwtexpui.safehtml.client.SafeHtml;
 import com.google.gwtexpui.safehtml.client.SafeHtmlBuilder;
 
 public class CommitMessageBlock extends Composite {
-  private final HTML description;
+  interface Binder extends UiBinder<HTMLPanel, CommitMessageBlock> {
+  }
+
+  private static Binder uiBinder = GWT.create(Binder.class);
+
+  @UiField
+  PreElement commitSummaryPre;
+  @UiField
+  PreElement commitBodyPre;
 
   public CommitMessageBlock() {
-    description = new HTML();
-    description.setStyleName(Gerrit.RESOURCES.css().changeScreenDescription());
-    initWidget(description);
+    initWidget(uiBinder.createAndBindUi(this));
   }
 
   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);
+    String[] splitCommitMessage = commitMessage.split("\n", 2);
+
+    String commitSummary = splitCommitMessage[0];
+    String commitBody = "";
+    if (splitCommitMessage.length > 1) {
+      commitBody = splitCommitMessage[1];
+    }
+
+    // Linkify commit summary
+    SafeHtml commitSummaryLinkified = new SafeHtmlBuilder().append(commitSummary);
+    commitSummaryLinkified = commitSummaryLinkified.linkify();
+    commitSummaryLinkified = CommentLinkProcessor.apply(commitSummaryLinkified);
+    commitSummaryPre.setInnerHTML(commitSummaryLinkified.asString());
+
+    // Hide commit body if there is no body
+    if (commitBody.trim().isEmpty()) {
+      commitBodyPre.getStyle().setDisplay(Display.NONE);
+    } else {
+      // Linkify commit body
+      SafeHtml commitBodyLinkified = new SafeHtmlBuilder().append(commitBody);
+      commitBodyLinkified = commitBodyLinkified.linkify();
+      commitBodyLinkified = CommentLinkProcessor.apply(commitBodyLinkified);
+      commitBodyPre.setInnerHTML(commitBodyLinkified.asString());
+    }
   }
 }

gerrit-gwtui/src/main/java/com/google/gerrit/client/changes/CommitMessageBlock.ui.xml

@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+Copyright (C) 2012 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.
+-->
+
+<ui:UiBinder xmlns:ui='urn:ui:com.google.gwt.uibinder'
+    xmlns:g='urn:import:com.google.gwt.user.client.ui'>
+
+
+  <ui:with field='res' type='com.google.gerrit.client.GerritResources'/>
+  <ui:style>
+    @eval selectionColor com.google.gerrit.client.Gerrit.getTheme().selectionColor;
+    @eval trimColor com.google.gerrit.client.Gerrit.getTheme().trimColor;
+    @eval backgroundColor com.google.gerrit.client.Gerrit.getTheme().backgroundColor;
+
+    .commitMessageTable {
+      border-collapse: separate;
+      border-spacing: 0;
+      margin-bottom: 10px;
+    }
+
+    .header {
+      background-color: trimColor;
+      white-space: nowrap;
+      color: textColor;
+      font-size: 10pt;
+      font-style: italic;
+      padding: 2px 6px 1px;
+    }
+
+    .contents {
+      border-bottom: 1px solid trimColor;
+      border-left: 1px solid trimColor;
+      border-right: 1px solid trimColor;
+      padding: 5px;
+    }
+
+    .contents span {
+      font-weight: bold;
+    }
+
+    .contents pre {
+      margin: 0;
+    }
+
+    .commitSummary {
+      font-weight: bold;
+    }
+
+    .commitBody {
+      margin-top: 10px;
+    }
+  </ui:style>
+
+  <g:HTMLPanel>
+    <table class='{style.commitMessageTable}'>
+      <tr><td class='{style.header}'>Commit Message</td></tr>
+      <tr><td class='{style.contents}'>
+        <pre class='{style.commitSummary} {res.css.changeScreenDescription}' ui:field='commitSummaryPre'/>
+        <pre class='{style.commitBody} {res.css.changeScreenDescription}' ui:field='commitBodyPre'/>
+      </td></tr>
+    </table>
+  </g:HTMLPanel>
+</ui:UiBinder>
+