Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.browsing.ui.swt / src / org / simantics / browsing / ui / swt / widgets / Scale.java

diff --git a/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/widgets/Scale.java b/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/widgets/Scale.java
new file mode 100644 (file)
index 0000000..3a32a35
--- /dev/null
+++ b/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/widgets/Scale.java
@@ -0,0 +1,106 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2012 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.browsing.ui.swt.widgets;\r
+\r
+import java.util.concurrent.CopyOnWriteArrayList;\r
+\r
+import org.eclipse.swt.events.SelectionListener;\r
+import org.eclipse.swt.widgets.Composite;\r
+import org.eclipse.swt.widgets.Control;\r
+import org.eclipse.swt.widgets.Display;\r
+import org.simantics.browsing.ui.swt.widgets.impl.ReadFactory;\r
+import org.simantics.browsing.ui.swt.widgets.impl.Widget;\r
+import org.simantics.browsing.ui.swt.widgets.impl.WidgetSupport;\r
+import org.simantics.db.management.ISessionContext;\r
+import org.simantics.db.procedure.Listener;\r
+\r
+public class Scale extends WidgetImpl {\r
+\r
+    private ReadFactory<?, Integer> selectionFactory;\r
+    private final CopyOnWriteArrayList<SelectionListener> selectionListeners = new CopyOnWriteArrayList<SelectionListener>();\r
+\r
+    final private Display display;\r
+    final private org.eclipse.swt.widgets.Scale scale;\r
+\r
+    public Scale(Composite parent, WidgetSupport support, int style) {\r
+       super(support);\r
+        this.display = parent.getDisplay();\r
+        scale = new org.eclipse.swt.widgets.Scale(parent, style);\r
+        scale.setData("org.simantics.browsing.ui.widgets.Scale", this);\r
+        support.register(this);\r
+    }\r
+\r
+    public void setSelectionFactory(ReadFactory<?, Integer> selectionFactory) {\r
+        this.selectionFactory = selectionFactory;\r
+    }\r
+\r
+    public org.eclipse.swt.widgets.Scale getWidget() {\r
+        return scale;\r
+    }\r
+\r
+    @Override\r
+    public Control getControl() {\r
+        return scale;\r
+    }\r
+\r
+    @Override\r
+    public void setInput(ISessionContext context, Object input) {\r
+\r
+        if (selectionListeners != null) {\r
+            for (SelectionListener listener : selectionListeners) {\r
+                if(listener instanceof Widget) {\r
+                    ((Widget) listener).setInput(context, input);\r
+                }\r
+            }\r
+        }\r
+\r
+        if(selectionFactory != null) {\r
+            selectionFactory.listen(context, input, new Listener<Integer>() {\r
+\r
+                @Override\r
+                public void exception(Throwable t) {\r
+                    t.printStackTrace();\r
+                }\r
+\r
+                @Override\r
+                public void execute(final Integer selection) {\r
+                    if(isDisposed()) return;\r
+                    display.asyncExec(new Runnable() {\r
+\r
+                        @Override\r
+                        public void run() {\r
+                            if(isDisposed()) return;\r
+                            if(selection == null) return;\r
+                            for(SelectionListener listener : selectionListeners) scale.removeSelectionListener(listener);\r
+                            scale.setSelection(selection);\r
+                            for(SelectionListener listener : selectionListeners) scale.addSelectionListener(listener);\r
+                        }\r
+\r
+                    });\r
+                }\r
+\r
+                @Override\r
+                public boolean isDisposed() {\r
+                    return scale.isDisposed();\r
+                }\r
+\r
+            });\r
+        }\r
+\r
+    }\r
+\r
+    public synchronized void addSelectionListener(SelectionListener listener) {\r
+        selectionListeners.add(listener);\r
+        scale.addSelectionListener(listener);\r
+    }\r
+\r
+}\r