X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.browsing.ui.graph.impl%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fgraph%2Fimpl%2FWorkbenchSelectionInputSource.java;fp=bundles%2Forg.simantics.browsing.ui.graph.impl%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fgraph%2Fimpl%2FWorkbenchSelectionInputSource.java;h=f72ac24204aef54698ccfa694e0400e18adf0380;hp=0000000000000000000000000000000000000000;hb=969bd23cab98a79ca9101af33334000879fb60c5;hpb=866dba5cd5a3929bbeae85991796acb212338a08

diff --git a/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/WorkbenchSelectionInputSource.java b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/WorkbenchSelectionInputSource.java
new file mode 100644
index 000000000..f72ac2420
--- /dev/null
+++ b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/WorkbenchSelectionInputSource.java
@@ -0,0 +1,117 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2011 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * 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:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.browsing.ui.graph.impl;
+
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.ui.ISelectionListener;
+import org.eclipse.ui.ISelectionService;
+import org.eclipse.ui.IWorkbenchPage;
+import org.eclipse.ui.IWorkbenchPart;
+import org.eclipse.ui.IWorkbenchSite;
+import org.eclipse.ui.IWorkbenchWindow;
+import org.eclipse.ui.PlatformUI;
+import org.simantics.browsing.ui.GraphExplorer;
+import org.simantics.db.Disposable;
+import org.simantics.db.management.ISessionContext;
+import org.simantics.utils.ObjectUtils;
+
+/**
+ * @author Antti Villberg
+ */
+public class WorkbenchSelectionInputSource implements WorkbenchSessionContextInputSource, ObservableInputSource,
+        ISelectionListener, Disposable {
+
+    protected ISelectionService   service;
+    protected Object              selection;
+    protected IWorkbenchPart      part;
+    protected IWorkbenchPart      ownPart;
+    protected InputSourceListener listener;
+
+    @Override
+    public void init(IWorkbenchSite site, IWorkbenchPart ownPart) {
+        this.ownPart = ownPart;
+        attachToWorkbench();
+    }
+
+    /**
+     * @thread SWT
+     */
+    protected void attachToWorkbench() {
+        IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
+        if (window == null)
+            return;
+        service = window.getSelectionService();
+        ISelection initialSelection = service.getSelection();
+        IWorkbenchPart activePart = null;
+        if (initialSelection != null) {
+            IWorkbenchPage activePage = window.getActivePage();
+            if (activePage != null)
+                activePart = activePage.getActivePart();
+        }
+        selectionChanged(activePart, initialSelection);
+        service.addPostSelectionListener(this);
+    }
+
+    /**
+     * @thread SWT
+     */
+    @Override
+    public void dispose() {
+        if (service != null)
+            service.removePostSelectionListener(this);
+        service = null;
+        selection = null;
+        listener = null;
+    }
+
+    /**
+     * @thread SWT
+     */
+    @Override
+    public void selectionChanged(IWorkbenchPart part, ISelection selection) {
+    	// Do not process selections from self
+    	if(ObjectUtils.objectEquals(ownPart, part)) return;
+        Object old = this.selection;
+        this.selection = selection;
+        this.part = part;
+        //System.err.println("WorkbenchSelectionInputSource.selectionChanged(" + part + ", " + this.selection + ")");
+        fireIfInputChanged(old, selection);
+    }
+
+    /**
+     * @param oldSelection
+     * @param newSelection
+     * @thread SWT
+     */
+    protected void fireIfInputChanged(Object oldSelection, Object newSelection) {
+        InputSourceListener l = listener;
+        if (l != null)
+            if (!ObjectUtils.objectEquals(oldSelection, newSelection))
+                l.inputChanged(this);
+    }
+
+    @Override
+    public Object get(ISessionContext ctx) {
+        return selection != null ? selection : GraphExplorer.EMPTY_INPUT;
+    }
+    
+    @Override
+    public IWorkbenchPart getProvider() {
+    	return this.part;
+    }
+
+    @Override
+    public void setListener(InputSourceListener listener) {
+        this.listener = listener;
+    }
+
+}