Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.views.swt.client / src / org / simantics / views / swt / client / impl / SWTButton.java

diff --git a/bundles/org.simantics.views.swt.client/src/org/simantics/views/swt/client/impl/SWTButton.java b/bundles/org.simantics.views.swt.client/src/org/simantics/views/swt/client/impl/SWTButton.java
new file mode 100644 (file)
index 0000000..c13cc6d
--- /dev/null
+++ b/bundles/org.simantics.views.swt.client/src/org/simantics/views/swt/client/impl/SWTButton.java
@@ -0,0 +1,113 @@
+package org.simantics.views.swt.client.impl;\r
+\r
+import java.io.ByteArrayInputStream;\r
+import java.util.Arrays;\r
+\r
+import org.eclipse.jface.resource.ImageDescriptor;\r
+import org.eclipse.jface.resource.ResourceManager;\r
+import org.eclipse.swt.events.SelectionEvent;\r
+import org.eclipse.swt.events.SelectionListener;\r
+import org.eclipse.swt.graphics.ImageData;\r
+import org.eclipse.swt.graphics.ImageLoader;\r
+import org.eclipse.swt.widgets.Button;\r
+import org.eclipse.swt.widgets.Composite;\r
+import org.simantics.scl.runtime.function.Function1;\r
+import org.simantics.views.swt.client.base.SingleSWTViewNode;\r
+\r
+public class SWTButton extends SingleSWTViewNode<Button> {\r
+       \r
+       private static final long serialVersionUID = 7932335224632082902L;\r
+\r
+       public Function1<Object, Object> modifier;\r
+       public byte[] image;\r
+       public String tooltip;\r
+\r
+       private transient ImageDescriptor imageDesc;\r
+\r
+       @Override\r
+       public void createControls(Composite parent) {\r
+               \r
+               control = new Button(parent, style);\r
+\r
+               setProperties();\r
+\r
+               control.addSelectionListener(new SelectionListener() {\r
+\r
+                       @Override\r
+                       public void widgetSelected(SelectionEvent e) {\r
+                               if(modifier != null)\r
+                                       modifier.apply(SWTButton.this);\r
+                       }\r
+\r
+                       @Override\r
+                       public void widgetDefaultSelected(SelectionEvent e) {\r
+                               widgetSelected(e);\r
+                       }\r
+                       \r
+               });\r
+               \r
+       }\r
+       \r
+       @Override\r
+       public void synchronizeText(String text) {\r
+               if(text != null) {\r
+                       control.setText(text);\r
+                       // This seems to be necessary for correct size computations\r
+                       control.getParent().layout(true);\r
+               }\r
+       }\r
+\r
+       public void synchronizeImage(byte[] image) {\r
+               ResourceManager rm =  getResourceManager();\r
+               ImageDescriptor oldDesc = imageDesc;\r
+               if (image != null)\r
+                       control.setImage(rm.createImage(imageDesc = new Descriptor(image)));\r
+               if (oldDesc != null)\r
+                       rm.destroyImage(oldDesc);\r
+       }\r
+       \r
+       public void synchronizeModifier(Function1<Object, Object> modifier) {\r
+               \r
+       }\r
+       \r
+       public void synchronizeTooltip(String tooltip) {\r
+               if(tooltip != null) control.setToolTipText(tooltip);\r
+       }\r
+\r
+       static class Descriptor extends ImageDescriptor {\r
+           \r
+           final byte[] data;\r
+           final int hash;\r
+           \r
+           public Descriptor(byte[] data) {\r
+               this.data = data;\r
+               this.hash = Arrays.hashCode(data);\r
+           }\r
+\r
+           @Override\r
+           public ImageData getImageData() {\r
+               return new ImageLoader().load(new ByteArrayInputStream(data))[0];\r
+           }\r
+\r
+           @Override\r
+           public int hashCode() {\r
+               return hash;\r
+           }\r
+\r
+           @Override\r
+           public boolean equals(Object obj) {\r
+               if (this == obj)\r
+                   return true;\r
+               if (obj == null)\r
+                   return false;\r
+               if (getClass() != obj.getClass())\r
+                   return false;\r
+               Descriptor other = (Descriptor) obj;\r
+               if (!Arrays.equals(data, other.data))\r
+                   return false;\r
+               return true;\r
+           }\r
+\r
+       }\r
+\r
+}\r