Add ability to switch between files in Git Diff widget

ide/che-core-ide-api/src/main/resources/org/eclipse/che/ide/api/ui/style.css

@@ -167,7 +167,7 @@
 @def dividerThickness 1px;
 @def popupPadding 24px;
 @def titlePaddingBottom 16px;
-@def buttonSpacing 18px;
+@def buttonSideSpacing 9px;
 @def labelPaddingBottom 6px;
 @def examplePaddingTop 4px;
 @def formButtonPaddingTop 18px;

ide/che-core-ide-ui/src/main/java/org/eclipse/che/ide/ui/button/ButtonAlignment.java

@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2012-2017 Red Hat, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *   Red Hat, Inc. - initial API and implementation
+ */
+package org.eclipse.che.ide.ui.button;
+
+/**
+ * Describes button alignment in a horizontal container.
+ *
+ * @author Mykola Morhun
+ */
+public enum ButtonAlignment {
+  LEFT,
+  RIGHT
+}

ide/che-core-ide-ui/src/main/java/org/eclipse/che/ide/ui/window/Window.java

@@ -28,6 +28,7 @@
 import com.google.gwt.user.client.ui.Widget;
 import elemental.js.dom.JsElement;
 import org.eclipse.che.commons.annotation.Nullable;
+import org.eclipse.che.ide.ui.button.ButtonAlignment;
 import org.vectomatic.dom.svg.ui.SVGResource;
 
 /**
@@ -154,20 +155,32 @@ public void setHideOnEscapeEnabled(boolean isEnabled) {
   }
 
   protected Button createButton(String title, String debugId, ClickHandler clickHandler) {
+    return createButton(title, debugId, clickHandler, ButtonAlignment.RIGHT);
+  }
+
+  protected Button createButton(
+      String title, String debugId, ClickHandler clickHandler, ButtonAlignment alignment) {
     Button button = new Button();
     button.setText(title);
     button.ensureDebugId(debugId);
     button.getElement().setId(debugId);
     button.addStyleName(resources.windowCss().button());
+    addButtonAlignment(button, alignment);
     button.addClickHandler(clickHandler);
     //set default tab index
     button.setTabIndex(0);
     return button;
   }
 
   protected Button createPrimaryButton(String title, String debugId, ClickHandler clickHandler) {
+    return createPrimaryButton(title, debugId, clickHandler, ButtonAlignment.RIGHT);
+  }
+
+  protected Button createPrimaryButton(
+      String title, String debugId, ClickHandler clickHandler, ButtonAlignment alignment) {
     Button button = createButton(title, debugId, clickHandler);
     button.addStyleName(resources.windowCss().primaryButton());
+    addButtonAlignment(button, alignment);
     //set default tab index
     button.setTabIndex(0);
     return button;
@@ -243,6 +256,17 @@ public void execute() {
     }
   }
 
+  private void addButtonAlignment(Button button, ButtonAlignment alignment) {
+    switch (alignment) {
+      case LEFT:
+        button.addStyleName(resources.windowCss().buttonAlignLeft());
+        break;
+      case RIGHT:
+        button.addStyleName(resources.windowCss().buttonAlignRight());
+        break;
+    }
+  }
+
   /**
    * Sets focus on the given element. If {@code elementToFocus} is {@code null}, no element will be
    * given focus
@@ -343,6 +367,10 @@ public interface Css extends CssResource {
 
     String button();
 
+    String buttonAlignLeft();
+
+    String buttonAlignRight();
+
     String image();
   }
 

ide/che-core-ide-ui/src/main/resources/org/eclipse/che/ide/ui/window/Window.css

@@ -113,8 +113,8 @@
 }
 
 .alignBtn {
-    float: right;
-    margin-left: buttonSpacing;
+    margin-left: buttonSideSpacing;
+    margin-right: buttonSideSpacing;
 }
 
 .headerTitleWrapper {
@@ -151,7 +151,6 @@
 }
 
 .button, .primaryButton {
-    float: right;
     height: buttonHeight;
     line-height: buttonLineHeight;
     min-width: buttonMinWidth;
@@ -194,6 +193,14 @@
     opacity: 0.5;
 }
 
+.buttonAlignLeft {
+    float: left;
+}
+
+.buttonAlignRight {
+    float: right;
+}
+
 /* Blue button styles */
 .primaryButton {
     background: primaryButtonBackground;

plugins/plugin-git/che-plugin-git-ext-git/src/main/java/org/eclipse/che/ide/ext/git/client/GitExtension.java

@@ -33,6 +33,8 @@
 import org.eclipse.che.ide.ext.git.client.action.FetchAction;
 import org.eclipse.che.ide.ext.git.client.action.HistoryAction;
 import org.eclipse.che.ide.ext.git.client.action.InitRepositoryAction;
+import org.eclipse.che.ide.ext.git.client.action.NextDiffAction;
+import org.eclipse.che.ide.ext.git.client.action.PreviousDiffAction;
 import org.eclipse.che.ide.ext.git.client.action.PullAction;
 import org.eclipse.che.ide.ext.git.client.action.PushAction;
 import org.eclipse.che.ide.ext.git.client.action.RemoveFromIndexAction;
@@ -57,6 +59,9 @@ public class GitExtension {
   public static final String HISTORY_GROUP_MAIN_MENU = "GitHistoryGroup";
   public static final String GIT_COMPARE_WITH_LATEST = "gitCompareWithLatest";
 
+  public static final String NEXT_DIFF_ACTION_ID = "nextDiff";
+  public static final String PREV_DIFF_ACTION_ID = "prevDiff";
+
   @Inject
   public GitExtension(
       GitResources resources,
@@ -81,6 +86,8 @@ public GitExtension(
       CompareWithLatestAction compareWithLatestAction,
       CompareWithBranchAction compareWithBranchAction,
       CompareWithRevisionAction compareWithRevisionAction,
+      NextDiffAction nextDiffAction,
+      PreviousDiffAction previousDiffAction,
       KeyBindingAgent keyBinding,
       AppContext appContext) {
 
@@ -180,8 +187,18 @@ public GitExtension(
     editorContextMenuGroup.addSeparator();
     editorContextMenuGroup.add(gitContextMenuGroup);
 
+    actionManager.registerAction(NEXT_DIFF_ACTION_ID, nextDiffAction);
+    actionManager.registerAction(PREV_DIFF_ACTION_ID, previousDiffAction);
+
     keyBinding
         .getGlobal()
         .addKey(new KeyBuilder().action().alt().charCode('d').build(), GIT_COMPARE_WITH_LATEST);
+
+    keyBinding
+        .getGlobal()
+        .addKey(new KeyBuilder().alt().charCode('.').build(), NEXT_DIFF_ACTION_ID);
+    keyBinding
+        .getGlobal()
+        .addKey(new KeyBuilder().alt().charCode(',').build(), PREV_DIFF_ACTION_ID);
   }
 }

plugins/plugin-git/che-plugin-git-ext-git/src/main/java/org/eclipse/che/ide/ext/git/client/GitLocalizationConstant.java

@@ -72,6 +72,15 @@ public interface GitLocalizationConstant extends Messages {
   @Key("button.compare")
   String buttonCompare();
 
+  @Key("button.save_changes")
+  String buttonSaveChanges();
+
+  @Key("button.next_diff")
+  String buttonNextDiff();
+
+  @Key("button.previous_diff")
+  String buttonPreviousDiff();
+
   @Key("console.tooltip.clear")
   String buttonClear();
 

plugins/plugin-git/che-plugin-git-ext-git/src/main/java/org/eclipse/che/ide/ext/git/client/action/CompareWithLatestAction.java

@@ -15,12 +15,9 @@
 import static org.eclipse.che.api.git.shared.DiffType.NAME_STATUS;
 import static org.eclipse.che.ide.api.notification.StatusNotification.DisplayMode.NOT_EMERGE_MODE;
 import static org.eclipse.che.ide.api.notification.StatusNotification.Status.FAIL;
-import static org.eclipse.che.ide.ext.git.client.compare.FileStatus.defineStatus;
 
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
-import java.util.HashMap;
-import java.util.Map;
 import org.eclipse.che.ide.api.action.ActionEvent;
 import org.eclipse.che.ide.api.app.AppContext;
 import org.eclipse.che.ide.api.dialogs.DialogFactory;
@@ -29,8 +26,8 @@
 import org.eclipse.che.ide.api.resources.Project;
 import org.eclipse.che.ide.api.resources.Resource;
 import org.eclipse.che.ide.ext.git.client.GitLocalizationConstant;
+import org.eclipse.che.ide.ext.git.client.compare.AlteredFiles;
 import org.eclipse.che.ide.ext.git.client.compare.ComparePresenter;
-import org.eclipse.che.ide.ext.git.client.compare.FileStatus.Status;
 import org.eclipse.che.ide.ext.git.client.compare.changeslist.ChangesListPresenter;
 
 /**
@@ -106,25 +103,13 @@ public void actionPerformed(ActionEvent e) {
                         null)
                     .show();
               } else {
-                final String[] changedFiles = diff.split("\n");
-                if (changedFiles.length == 1) {
-                  project
-                      .getFile(changedFiles[0].substring(2))
-                      .then(
-                          file -> {
-                            if (file.isPresent()) {
-                              comparePresenter.showCompareWithLatest(
-                                  file.get(),
-                                  defineStatus(changedFiles[0].substring(0, 1)),
-                                  REVISION);
-                            }
-                          });
+                AlteredFiles alteredFiles = new AlteredFiles(project, diff);
+                if (alteredFiles.getFilesQuantity() == 1) {
+
+                  comparePresenter.showCompareWithLatest(alteredFiles, null, REVISION);
                 } else {
-                  Map<String, Status> items = new HashMap<>();
-                  for (String item : changedFiles) {
-                    items.put(item.substring(2, item.length()), defineStatus(item.substring(0, 1)));
-                  }
-                  changesListPresenter.show(items, REVISION, null, project);
+
+                  changesListPresenter.show(alteredFiles, REVISION, null);
                 }
               }
             })

plugins/plugin-git/che-plugin-git-ext-git/src/main/java/org/eclipse/che/ide/ext/git/client/action/NextDiffAction.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2012-2017 Red Hat, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *   Red Hat, Inc. - initial API and implementation
+ */
+package org.eclipse.che.ide.ext.git.client.action;
+
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+import org.eclipse.che.ide.api.action.Action;
+import org.eclipse.che.ide.api.action.ActionEvent;
+import org.eclipse.che.ide.ext.git.client.compare.ComparePresenter;
+
+/** @author Mykola Morhun */
+@Singleton
+public class NextDiffAction extends Action {
+
+  private final ComparePresenter comparePresenter;
+
+  @Inject
+  public NextDiffAction(ComparePresenter comparePresenter) {
+    this.comparePresenter = comparePresenter;
+  }
+
+  @Override
+  public void actionPerformed(ActionEvent e) {
+    if (comparePresenter.isShown()) {
+      comparePresenter.onNextDiffClicked();
+    }
+  }
+}

plugins/plugin-git/che-plugin-git-ext-git/src/main/java/org/eclipse/che/ide/ext/git/client/action/PreviousDiffAction.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2012-2017 Red Hat, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *   Red Hat, Inc. - initial API and implementation
+ */
+package org.eclipse.che.ide.ext.git.client.action;
+
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+import org.eclipse.che.ide.api.action.Action;
+import org.eclipse.che.ide.api.action.ActionEvent;
+import org.eclipse.che.ide.ext.git.client.compare.ComparePresenter;
+
+/** @author Mykola Morhun */
+@Singleton
+public class PreviousDiffAction extends Action {
+
+  private final ComparePresenter comparePresenter;
+
+  @Inject
+  public PreviousDiffAction(ComparePresenter comparePresenter) {
+    super(null, null);
+    this.comparePresenter = comparePresenter;
+  }
+
+  @Override
+  public void actionPerformed(ActionEvent e) {
+    if (comparePresenter.isShown()) {
+      comparePresenter.onPreviousDiffClicked();
+    }
+  }
+}