Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.modeling.ui / src / org / simantics / modeling / ui / actions / e4 / EditStyleHandler.java

diff --git a/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/actions/e4/EditStyleHandler.java b/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/actions/e4/EditStyleHandler.java
new file mode 100644 (file)
index 0000000..97b3038
--- /dev/null
+++ b/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/actions/e4/EditStyleHandler.java
@@ -0,0 +1,108 @@
+/*******************************************************************************\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.modeling.ui.actions.e4;\r
+\r
+import java.util.Arrays;\r
+import java.util.List;\r
+\r
+import javax.inject.Named;\r
+\r
+import org.eclipse.e4.core.contexts.Active;\r
+import org.eclipse.e4.core.di.annotations.CanExecute;\r
+import org.eclipse.e4.core.di.annotations.Execute;\r
+import org.eclipse.e4.ui.model.application.ui.basic.MPart;\r
+import org.eclipse.e4.ui.services.IServiceConstants;\r
+import org.eclipse.jface.viewers.ISelection;\r
+import org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor;\r
+import org.simantics.Simantics;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.common.request.UnaryRead;\r
+import org.simantics.db.common.utils.RequestUtil;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.diagram.stubs.DiagramResource;\r
+import org.simantics.modeling.ui.actions.style.EditStyle;\r
+import org.simantics.modeling.ui.diagramEditor.DiagramEditor;\r
+import org.simantics.ui.SimanticsUI;\r
+import org.simantics.ui.utils.ResourceAdaptionUtils;\r
+\r
+/**\r
+ * Style Edit\r
+ * \r
+ * TODO : should we have extension point for expanding styles?\r
+ * TODO : default ColorChooser is not suitable for this task\r
+ * TODO : how to store MetricsFormat template list\r
+ * \r
+ * @author Marko Luukkainen <marko.luukkainen@vtt.fi>\r
+ *\r
+ */\r
+public class EditStyleHandler {\r
+\r
+    private Resource[] lastResources = Resource.NONE;\r
+    private boolean cachedCanExecute;\r
+\r
+    @CanExecute\r
+    public boolean canExecute(@Named(IServiceConstants.ACTIVE_SELECTION) ISelection s, @Active MPart part) throws DatabaseException, InterruptedException {\r
+        if (!(part.getObject() instanceof CompatibilityEditor))\r
+            return false;\r
+        CompatibilityEditor editor = (CompatibilityEditor) part.getObject();\r
+        if (!(editor.getPart() instanceof DiagramEditor))\r
+            return false;\r
+        if (s == null)\r
+            return false;\r
+\r
+        final Resource[] resources = ResourceAdaptionUtils.toResources(s);\r
+        if (resources.length != 0) {\r
+            if (!Arrays.equals(resources, lastResources)) {\r
+                lastResources = resources;\r
+                cachedCanExecute = areStyleProviders(resources);\r
+            }\r
+            return cachedCanExecute;\r
+        }\r
+        return false;\r
+    }\r
+\r
+    private static boolean areStyleProviders(Resource[] resources) throws DatabaseException, InterruptedException {\r
+        return RequestUtil.trySyncRequest(\r
+                Simantics.getSession(),\r
+                SimanticsUI.UI_THREAD_REQUEST_START_TIMEOUT,\r
+                SimanticsUI.UI_THREAD_REQUEST_EXECUTION_TIMEOUT,\r
+                false,\r
+                new StyleProviderCheck(Arrays.asList(resources)));\r
+    }\r
+\r
+    private static class StyleProviderCheck extends UnaryRead<List<Resource>, Boolean> {\r
+\r
+        public StyleProviderCheck(List<Resource> parameter) {\r
+            super(parameter);\r
+        }\r
+\r
+        @Override\r
+        public Boolean perform(ReadGraph graph) throws DatabaseException {\r
+            DiagramResource DIA = DiagramResource.getInstance(graph);\r
+            // Find what kind of styles selected objects support\r
+            for (Resource r : parameter)\r
+                if (!graph.isInstanceOf(r, DIA.StyleProvider))\r
+                    return false;\r
+            return true;\r
+        }\r
+\r
+    }\r
+\r
+    @Execute\r
+    public void execute(@Named(IServiceConstants.ACTIVE_SELECTION) ISelection s) {\r
+        final Resource[] resources = ResourceAdaptionUtils.toResources(s);\r
+        if (resources.length != 0)\r
+            EditStyle.openStyleDialog(resources);\r
+    }\r
+\r
+}\r