Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.g2d / src / org / simantics / g2d / canvas / impl / MouseCaptureContext.java

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/canvas/impl/MouseCaptureContext.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/canvas/impl/MouseCaptureContext.java
new file mode 100644 (file)
index 0000000..4b42819
--- /dev/null
+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/canvas/impl/MouseCaptureContext.java
@@ -0,0 +1,94 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 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.g2d.canvas.impl;\r
+\r
+import java.lang.reflect.Method;\r
+import java.util.HashMap;\r
+import java.util.HashSet;\r
+import java.util.Map;\r
+import java.util.Set;\r
+\r
+import org.simantics.g2d.canvas.IMouseCaptureContext;\r
+import org.simantics.g2d.canvas.IMouseCaptureHandle;\r
+import org.simantics.g2d.canvas.IMouseCaptureHandleListener;\r
+import org.simantics.g2d.canvas.IMouseCaptureListener;\r
+import org.simantics.utils.threads.IThreadWorkQueue;\r
+import org.simantics.utils.threads.SyncListenerList;\r
+\r
+/**\r
+ * @author Toni Kalajainen\r
+ */\r
+public class MouseCaptureContext implements IMouseCaptureContext {\r
+\r
+    protected Map<Integer, Set<IMouseCaptureHandle>> mouseCapture = \r
+        new HashMap<Integer, Set<IMouseCaptureHandle>>();\r
+    \r
+    protected SyncListenerList<IMouseCaptureListener> mouseCaptureListeners =\r
+        new SyncListenerList<IMouseCaptureListener>(IMouseCaptureListener.class);\r
+    \r
+    public void addMouseCaptureListener(IMouseCaptureListener listener) {\r
+        mouseCaptureListeners.add(listener);\r
+    }\r
+    public void addMouseCaptureListener(IMouseCaptureListener listener, IThreadWorkQueue thread) {\r
+        mouseCaptureListeners.add(thread, listener);\r
+    }    \r
+    public void removeMouseCaptureListener(IMouseCaptureListener listener) {\r
+        mouseCaptureListeners.remove(listener);\r
+    }\r
+    public void removeMouseCaptureListener(IMouseCaptureListener listener, IThreadWorkQueue thread) {\r
+        mouseCaptureListeners.remove(thread, listener);\r
+    }\r
+    \r
+    private final static Method onMouseCaptured = SyncListenerList.getMethod(IMouseCaptureListener.class, "onMouseCaptured");\r
+    private final static Method onMouseReleased = SyncListenerList.getMethod(IMouseCaptureListener.class, "onMouseReleased");\r
+    protected void fireMouseCaptured(int mouseId) {\r
+        mouseCaptureListeners.fireEventSync(onMouseCaptured, this, mouseId);\r
+    }\r
+    protected void fireAsyncMouseCaptured(int mouseId) {\r
+        mouseCaptureListeners.fireEventAsync(onMouseCaptured, this, mouseId);\r
+    }\r
+    protected void fireMouseReleased(int mouseId) {\r
+        mouseCaptureListeners.fireEventSync(onMouseReleased, this, mouseId);\r
+    }\r
+    protected void fireAsyncMouseReleased(int mouseId) {\r
+        mouseCaptureListeners.fireEventAsync(onMouseReleased, this, mouseId);\r
+    }\r
+    \r
+    public synchronized IMouseCaptureHandle captureMouse(int mouseId) {\r
+        Set<IMouseCaptureHandle> captures = mouseCapture.get(mouseId);\r
+        IMouseCaptureHandle capture = new MouseCaptureHandle(mouseId);\r
+        capture.addMouseCaptureHandleListener(new IMouseCaptureHandleListener() {\r
+            @Override\r
+            public void onCaptureReleased(IMouseCaptureHandle sender) {\r
+                synchronized(MouseCaptureContext.this)\r
+                {\r
+                    Set<IMouseCaptureHandle> captures = mouseCapture.get(sender.mouseId());\r
+                    if (!captures.contains(this)) return;\r
+                    captures.remove(this);\r
+                    if (captures.isEmpty()) {\r
+                        mouseCapture.remove(captures);\r
+                        fireMouseReleased(sender.mouseId());\r
+                    }\r
+                }\r
+            }});\r
+        if (captures==null) {\r
+            captures = new HashSet<IMouseCaptureHandle>();\r
+            mouseCapture.put(mouseId, captures);\r
+            fireMouseCaptured(mouseId);\r
+        }\r
+        captures.add(capture);\r
+        return capture;\r
+    }\r
+\r
+    \r
+\r
+}\r