SideBySide2: Add NavLinks2

Implementing a new NavLinks. The current implementation is simple and
hasn't taken care of PatchValidator yet.

Added sortFileInfoByPath() to FileInfo.

Change-Id: Ia3e07c613abff391533508f2d553f6b720d9f0db

gerrit-gwtui/src/main/java/com/google/gerrit/client/change/FileTable.java

@@ -23,7 +23,6 @@ import com.google.gerrit.client.diff.FileInfo;
 import com.google.gerrit.client.patches.PatchUtil;
 import com.google.gerrit.client.rpc.CallbackGroup;
 import com.google.gerrit.client.rpc.NativeMap;
-import com.google.gerrit.client.rpc.Natives;
 import com.google.gerrit.client.rpc.RestApi;
 import com.google.gerrit.client.ui.NavigationTable;
 import com.google.gerrit.reviewdb.client.Change;
@@ -53,8 +52,6 @@ import com.google.gwtexpui.safehtml.client.SafeHtmlBuilder;
 import com.google.gwtorm.client.KeyUtil;
 
 import java.sql.Timestamp;
-import java.util.Collections;
-import java.util.Comparator;
 
 class FileTable extends FlowPanel {
   static final FileTableResources R = GWT
@@ -150,17 +147,7 @@ class FileTable extends FlowPanel {
       NativeMap<JsArray<CommentInfo>> comments,
       NativeMap<JsArray<CommentInfo>> drafts) {
     JsArray<FileInfo> list = fileMap.values();
-    Collections.sort(Natives.asList(list), new Comparator<FileInfo>() {
+    FileInfo.sortFileInfoByPath(list);
-      @Override
-      public int compare(FileInfo a, FileInfo b) {
-        if (Patch.COMMIT_MSG.equals(a.path())) {
-          return -1;
-        } else if (Patch.COMMIT_MSG.equals(b.path())) {
-          return 1;
-        }
-        return a.path().compareTo(b.path());
-      }
-    });
 
     DisplayCommand cmd = new DisplayCommand(fileMap, list,
         myLastReply, comments, drafts);

gerrit-gwtui/src/main/java/com/google/gerrit/client/diff/FileInfo.java

@@ -14,7 +14,13 @@
 
 package com.google.gerrit.client.diff;
 
+import com.google.gerrit.client.rpc.Natives;
+import com.google.gerrit.reviewdb.client.Patch;
 import com.google.gwt.core.client.JavaScriptObject;
+import com.google.gwt.core.client.JsArray;
+
+import java.util.Collections;
+import java.util.Comparator;
 
 public class FileInfo extends JavaScriptObject {
   public final native String path() /*-{ return this.path; }-*/;
@@ -26,6 +32,20 @@ public class FileInfo extends JavaScriptObject {
   public final native int _row() /*-{ return this._row }-*/;
   public final native void _row(int r) /*-{ this._row = r }-*/;
 
+  public static void sortFileInfoByPath(JsArray<FileInfo> list) {
+    Collections.sort(Natives.asList(list), new Comparator<FileInfo>() {
+      @Override
+      public int compare(FileInfo a, FileInfo b) {
+        if (Patch.COMMIT_MSG.equals(a.path())) {
+          return -1;
+        } else if (Patch.COMMIT_MSG.equals(b.path())) {
+          return 1;
+        }
+        return a.path().compareTo(b.path());
+      }
+    });
+  }
+
   protected FileInfo() {
   }
 }

gerrit-gwtui/src/main/java/com/google/gerrit/client/diff/NavLinks2.java

@@ -0,0 +1,128 @@
+// 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.diff;
+
+import com.google.gerrit.client.Gerrit;
+import com.google.gerrit.client.changes.ChangeApi;
+import com.google.gerrit.client.changes.Util;
+import com.google.gerrit.client.patches.PatchUtil;
+import com.google.gerrit.client.rpc.GerritCallback;
+import com.google.gerrit.client.rpc.NativeMap;
+import com.google.gerrit.client.ui.InlineHyperlink;
+import com.google.gerrit.common.PageLinks;
+import com.google.gerrit.reviewdb.client.Change;
+import com.google.gerrit.reviewdb.client.Patch;
+import com.google.gerrit.reviewdb.client.PatchSet;
+import com.google.gwt.core.client.GWT;
+import com.google.gwt.core.client.JsArray;
+import com.google.gwt.event.dom.client.KeyPressEvent;
+import com.google.gwt.uibinder.client.UiBinder;
+import com.google.gwt.uibinder.client.UiField;
+import com.google.gwt.user.client.ui.Composite;
+import com.google.gwt.user.client.ui.HTMLPanel;
+import com.google.gwtexpui.globalkey.client.KeyCommand;
+import com.google.gwtexpui.globalkey.client.KeyCommandSet;
+import com.google.gwtexpui.safehtml.client.SafeHtml;
+import com.google.gwtexpui.safehtml.client.SafeHtmlBuilder;
+import com.google.gwtorm.client.KeyUtil;
+
+class NavLinks2 extends Composite {
+  interface Binder extends UiBinder<HTMLPanel, NavLinks2> {}
+  private static final Binder uiBinder = GWT.create(Binder.class);
+
+  @UiField InlineHyperlink prevLink;
+  @UiField InlineHyperlink nextLink;
+  @UiField InlineHyperlink upLink;
+
+  private final KeyCommandSet keys;
+  private final PatchSet.Id patchSetId;
+  private final String path;
+
+  NavLinks2(KeyCommandSet keys, PatchSet.Id patchSetId, String path) {
+    initWidget(uiBinder.createAndBindUi(this));
+    this.keys = keys;
+    this.patchSetId = patchSetId;
+    this.path = path;
+    upLink.setTargetHistoryToken(PageLinks.toChange2(
+        patchSetId.getParentKey(),
+        String.valueOf(patchSetId.get())));
+  }
+
+  @Override
+  protected void onLoad() {
+    ChangeApi.revision(patchSetId).view("files").get(
+        new GerritCallback<NativeMap<FileInfo>>() {
+      @Override
+      public void onSuccess(NativeMap<FileInfo> result) {
+        result.copyKeysIntoChildren("path");
+        JsArray<FileInfo> files = result.values();
+        FileInfo.sortFileInfoByPath(files);
+        int index = 0; // TODO: Maybe use patchIndex.
+        for (int i = 0; i < files.length(); i++) {
+          if (path.equals(files.get(i).path())) {
+            index = i;
+          }
+        }
+        setupNav('[', PatchUtil.C.previousFileHelp(),
+            index == 0 ? null : files.get(index - 1));
+        setupNav(']', PatchUtil.C.nextFileHelp(),
+            index == files.length() - 1 ? null : files.get(index + 1));
+      }
+    });
+  }
+
+  private String url(FileInfo info) {
+    Change.Id c = patchSetId.getParentKey();
+    StringBuilder p = new StringBuilder();
+    p.append("/c/").append(c).append('/');
+    p.append(patchSetId.get()).append('/').append(KeyUtil.encode(info.path()));
+    p.append(info.binary() ? ",unified" : ",cm");
+    return p.toString();
+  }
+
+  private void setupNav(int key, String help, FileInfo info) {
+    if (info != null) {
+      final String url = url(info);
+      String fileName = getFileNameOnly(info.path());
+      if (key == '[') {
+        prevLink.setTargetHistoryToken(url);
+        prevLink.setHTML(new SafeHtmlBuilder()
+            .append(SafeHtml.asis(Util.C.prevPatchLinkIcon()))
+            .append(fileName));
+      } else {
+        nextLink.setTargetHistoryToken(url);
+        nextLink.setHTML(new SafeHtmlBuilder()
+            .append(fileName)
+            .append(SafeHtml.asis(Util.C.nextPatchLinkIcon())));
+      }
+      keys.add(new KeyCommand(0, key, help) {
+        @Override
+        public void onKeyPress(KeyPressEvent event) {
+          Gerrit.display(url);
+        }
+      });
+    } else {
+      keys.add(new UpToChangeCommand2(patchSetId, 0, key));
+    }
+  }
+
+  private static String getFileNameOnly(String path) {
+    String fileName = Patch.COMMIT_MSG.equals(path)
+        ? Util.C.commitMessage()
+        : path;
+    int s = fileName.lastIndexOf('/');
+    return s >= 0 ? fileName.substring(s + 1) : fileName;
+  }
+}

gerrit-gwtui/src/main/java/com/google/gerrit/client/diff/NavLinks2.ui.xml

@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+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.
+-->
+<ui:UiBinder
+    xmlns:ui='urn:ui:com.google.gwt.uibinder'
+    xmlns:g='urn:import:com.google.gwt.user.client.ui'
+    xmlns:ge='urn:import:com.google.gerrit.client.ui'>
+  <ui:style>
+  .table {
+    table-layout: fixed;
+    width: 100%;
+  }
+  .prev {
+    text-align: left;
+  }
+  .up {
+    text-align: center;
+  }
+  .next {
+    text-align: right;
+  }
+  </ui:style>
+  <g:HTMLPanel>
+    <table ui:field='table' class='{style.table}'>
+      <tr>
+        <td class='{style.prev}'>
+          <ge:InlineHyperlink ui:field='prevLink'/>
+        </td>
+        <td class='{style.up}'>
+          <ge:InlineHyperlink ui:field='upLink'>
+            <ui:msg>&#x21e7;Up to change</ui:msg>
+          </ge:InlineHyperlink>
+        </td>
+        <td class='{style.next}'>
+          <ge:InlineHyperlink ui:field='nextLink'/>
+        </td>
+      </tr>
+    </table>
+  </g:HTMLPanel>
+</ui:UiBinder>

gerrit-gwtui/src/main/java/com/google/gerrit/client/diff/SideBySide2.java

@@ -94,6 +94,9 @@ public class SideBySide2 extends Screen {
   @UiField(provided = true)
   ReviewedPanel reviewed;
 
+  @UiField(provided = true)
+  NavLinks2 navLinks;
+
   @UiField(provided = true)
   DiffTable diffTable;
 
@@ -137,6 +140,8 @@ public class SideBySide2 extends Screen {
     // TODO: Re-implement necessary GlobalKey bindings.
     addDomHandler(GlobalKey.STOP_PROPAGATION, KeyPressEvent.getType());
     reviewed = new ReviewedPanel(revision, path);
+    keysNavigation = new KeyCommandSet(Gerrit.C.sectionNavigation());
+    add(navLinks = new NavLinks2(keysNavigation, revision, path));
     add(diffTable = new DiffTable(this, path));
     add(uiBinder.createAndBindUi(this));
   }
@@ -276,13 +281,7 @@ public class SideBySide2 extends Screen {
   public void registerKeys() {
     super.registerKeys();
 
-    keysNavigation = new KeyCommandSet(Gerrit.C.sectionNavigation());
+    keysNavigation.add(new UpToChangeCommand2(revision, 0, 'u'));
-    keysNavigation.add(new KeyCommand(0, 'u', PatchUtil.C.upToChange()) {
-      @Override
-      public void onKeyPress(KeyPressEvent event) {
-        upToChange().run();
-      }
-    });
     keysNavigation.add(new NoOpKeyCommand(0, 'j', PatchUtil.C.lineNext()));
     keysNavigation.add(new NoOpKeyCommand(0, 'k', PatchUtil.C.linePrev()));
 
@@ -1029,7 +1028,7 @@ public class SideBySide2 extends Screen {
       return;
     }
     int h = Gerrit.getHeaderFooterHeight() + reviewed.getOffsetHeight() +
-        diffTable.getHeaderHeight() + 10; // Estimate
+        navLinks.getOffsetHeight() + diffTable.getHeaderHeight() + 10; // Estimate
     cmA.setHeight(Window.getClientHeight() - h);
     cmA.refresh();
     cmB.setHeight(Window.getClientHeight() - h);

gerrit-gwtui/src/main/java/com/google/gerrit/client/diff/SideBySide2.ui.xml

@@ -19,6 +19,7 @@ limitations under the License.
     xmlns:d='urn:import:com.google.gerrit.client.diff'>
   <g:HTMLPanel>
     <d:ReviewedPanel ui:field='reviewed'/>
-    <d:DiffTable ui:field='diffTable' />
+    <d:NavLinks2 ui:field='navLinks'/>
+    <d:DiffTable ui:field='diffTable'/>
   </g:HTMLPanel>
 </ui:UiBinder>

gerrit-gwtui/src/main/java/com/google/gerrit/client/diff/UpToChangeCommand2.java

@@ -0,0 +1,38 @@
+// 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.diff;
+
+import com.google.gerrit.client.Gerrit;
+import com.google.gerrit.client.patches.PatchUtil;
+import com.google.gerrit.common.PageLinks;
+import com.google.gerrit.reviewdb.client.PatchSet;
+import com.google.gwt.event.dom.client.KeyPressEvent;
+import com.google.gwtexpui.globalkey.client.KeyCommand;
+
+class UpToChangeCommand2 extends KeyCommand {
+  private final PatchSet.Id revision;
+
+  UpToChangeCommand2(PatchSet.Id revision, int mask, int key) {
+    super(mask, key, PatchUtil.C.upToChange());
+    this.revision = revision;
+  }
+
+  @Override
+  public void onKeyPress(final KeyPressEvent event) {
+    Gerrit.display(PageLinks.toChange2(
+        revision.getParentKey(),
+        String.valueOf(revision.get())));
+  }
+}

gerrit-gwtui/src/main/java/com/google/gerrit/client/ui/InlineHyperlink.java

@@ -33,6 +33,13 @@ public class InlineHyperlink extends
     super(text, token);
   }
 
+  /**
+   * Creates an empty link.
+   */
+  public InlineHyperlink() {
+    super();
+  }
+
   @Override
   public void onBrowserEvent(final Event event) {
     if (DOM.eventGetType(event) == Event.ONCLICK && impl.handleAsClick(event)) {