1 files changed, 147 insertions, 0 deletions
diff --git a/org.eclipse.mylyn.reviews.ui/src/org/eclipse/mylyn/internal/reviews/ui/ActiveReviewManager.java b/org.eclipse.mylyn.reviews.ui/src/org/eclipse/mylyn/internal/reviews/ui/ActiveReviewManager.java
new file mode 100644
index 000000000..e5d068606
--- /dev/null
+++ b/org.eclipse.mylyn.reviews.ui/src/org/eclipse/mylyn/internal/reviews/ui/ActiveReviewManager.java
@@ -0,0 +1,147 @@
+/*******************************************************************************
+ * Copyright (c) 2014 Tasktop Technologies and others.
+ * 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:
+ *     Tasktop Technologies - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.mylyn.internal.reviews.ui;
+
+import java.util.List;
+
+import org.eclipse.mylyn.reviews.core.model.IReview;
+import org.eclipse.mylyn.reviews.ui.spi.editor.AbstractReviewTaskEditorPage;
+import org.eclipse.mylyn.tasks.ui.editors.TaskEditor;
+import org.eclipse.ui.IPageListener;
+import org.eclipse.ui.IPartListener;
+import org.eclipse.ui.IWindowListener;
+import org.eclipse.ui.IWorkbenchPage;
+import org.eclipse.ui.IWorkbenchPart;
+import org.eclipse.ui.IWorkbenchWindow;
+import org.eclipse.ui.PlatformUI;
+import org.eclipse.ui.forms.editor.IFormPage;
+
+import com.google.common.collect.Lists;
+
+public class ActiveReviewManager {
+
+	private IReview review = null;
+
+	private TaskEditor currentPart;
+
+	private final List<IActiveReviewListener> reviewListeners = Lists.newArrayList();
+
+	private final IPartListener editorPartListener = new IPartListener() {
+		public void partOpened(IWorkbenchPart part) {
+		}
+
+		public void partDeactivated(IWorkbenchPart part) {
+		}
+
+		public void partClosed(IWorkbenchPart part) {
+			if (part == currentPart) {
+				currentPart = null;
+				setReview(null);
+			}
+		}
+
+		public void partBroughtToTop(IWorkbenchPart part) {
+		}
+
+		public void partActivated(IWorkbenchPart part) {
+			if (part instanceof TaskEditor && currentPart != part) {
+				TaskEditor editor = (TaskEditor) part;
+				IFormPage page = editor.getActivePageInstance();
+				if (page instanceof AbstractReviewTaskEditorPage) {
+					currentPart = editor;
+					AbstractReviewTaskEditorPage reviewPage = (AbstractReviewTaskEditorPage) page;
+					setReview(reviewPage.getReview());
+				}
+			}
+		}
+	};
+
+	private final IPageListener pageListener = new IPageListener() {
+
+		private IWorkbenchPage activePage;
+
+		public void pageOpened(IWorkbenchPage page) {
+		}
+
+		public void pageClosed(IWorkbenchPage page) {
+			pageActivated(null);
+		}
+
+		public void pageActivated(IWorkbenchPage page) {
+			if (page != activePage) {
+				if (activePage != null) {
+					activePage.removePartListener(editorPartListener);
+				}
+				if (page != null) {
+					page.addPartListener(editorPartListener);
+					editorPartListener.partActivated(page.getActiveEditor());
+				}
+				activePage = page;
+			}
+		}
+	};
+
+	private final IWindowListener windowListener = new IWindowListener() {
+
+		public void windowOpened(IWorkbenchWindow window) {
+		}
+
+		public void windowDeactivated(IWorkbenchWindow window) {
+			window.removePageListener(pageListener);
+		}
+
+		public void windowClosed(IWorkbenchWindow window) {
+		}
+
+		public void windowActivated(IWorkbenchWindow window) {
+			window.addPageListener(pageListener);
+			pageListener.pageActivated(window.getActivePage());
+		}
+	};
+
+	public ActiveReviewManager() {
+		PlatformUI.getWorkbench().getActiveWorkbenchWindow().addPageListener(pageListener);
+		PlatformUI.getWorkbench().addWindowListener(windowListener);
+		windowListener.windowActivated(PlatformUI.getWorkbench().getActiveWorkbenchWindow());
+	}
+
+	public void setReview(IReview review) {
+		if (this.review != review) {
+			this.review = review;
+			if (review != null) {
+				for (IActiveReviewListener reviewListener : reviewListeners) {
+					reviewListener.reviewActivated(review);
+				}
+			} else {
+				for (IActiveReviewListener reviewListener : reviewListeners) {
+					reviewListener.reviewDeactivated();
+				}
+			}
+		}
+	}
+
+	public void addReviewListener(IActiveReviewListener listener) {
+		reviewListeners.add(listener);
+	}
+
+	public void removeReviewListener(IActiveReviewListener listener) {
+		reviewListeners.remove(listener);
+	}
+
+	public IReview getReview() {
+		return review;
+	}
+
+	public TaskEditor getCurrentPart() {
+		return currentPart;
+	}
+}