merged svn revision 33114 and added desktop and help plugins

[simantics/platform.git] / bundles / org.simantics.help.ui / src / org / simantics / help / ui / HelpFileDocumentProvider.java

diff --git a/bundles/org.simantics.help.ui/src/org/simantics/help/ui/HelpFileDocumentProvider.java b/bundles/org.simantics.help.ui/src/org/simantics/help/ui/HelpFileDocumentProvider.java
new file mode 100644 (file)
index 0000000..d199490
--- /dev/null
+++ b/bundles/org.simantics.help.ui/src/org/simantics/help/ui/HelpFileDocumentProvider.java
@@ -0,0 +1,94 @@
+package org.simantics.help.ui;\r
+\r
+import java.io.PrintWriter;\r
+import java.io.StringWriter;\r
+\r
+import org.eclipse.core.runtime.CoreException;\r
+import org.eclipse.core.runtime.IProgressMonitor;\r
+import org.eclipse.jface.operation.IRunnableContext;\r
+import org.eclipse.jface.text.Document;\r
+import org.eclipse.jface.text.IDocument;\r
+import org.eclipse.jface.text.source.IAnnotationModel;\r
+import org.eclipse.ui.texteditor.AbstractDocumentProvider;\r
+import org.simantics.Simantics;\r
+import org.simantics.databoard.Bindings;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.common.request.UniqueRead;\r
+import org.simantics.db.common.request.WriteRequest;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.util.Layer0Utils;\r
+import org.simantics.help.core.HelpUtils;\r
+import org.simantics.layer0.Layer0;\r
+import org.simantics.ui.workbench.IResourceEditorInput;\r
+import org.simantics.utils.logging.TimeLogger;\r
+\r
+public class HelpFileDocumentProvider extends AbstractDocumentProvider {\r
+\r
+    private Resource resource;\r
+    private String currentText;\r
+    private boolean errorHappened;\r
+\r
+    @Override\r
+    protected IDocument createDocument(Object element) throws CoreException {\r
+        IResourceEditorInput input = (IResourceEditorInput) element;\r
+        resource = input.getResource();\r
+        try {\r
+            return Simantics.getSession().syncRequest(new UniqueRead<Document>() {\r
+                @Override\r
+                public Document perform(ReadGraph graph) throws DatabaseException {\r
+                    currentText = HelpUtils.readHelpFileContents(graph, resource);\r
+                    errorHappened = false;\r
+                    return new Document(currentText != null ? currentText : "");\r
+                }\r
+            });\r
+        } catch (DatabaseException e) {\r
+            StringWriter sw = new StringWriter();\r
+            PrintWriter pw = new PrintWriter(sw);\r
+            e.printStackTrace(pw);\r
+            errorHappened = true;\r
+            return new Document(sw.toString());\r
+        }\r
+    }\r
+\r
+    @Override\r
+    protected IAnnotationModel createAnnotationModel(Object element) throws CoreException {\r
+        return null;\r
+    }\r
+\r
+    @Override\r
+    protected void doSaveDocument(IProgressMonitor monitor, Object element, IDocument document, boolean overwrite) throws CoreException {\r
+        TimeLogger.resetTimeAndLog("HelpFileDocumentProvider.doSaveDocument");\r
+        currentText = document.get();\r
+        Simantics.getSession().asyncRequest(new WriteRequest() {\r
+            @Override\r
+            public void perform(WriteGraph graph) throws DatabaseException {\r
+                graph.markUndoPoint();\r
+                HelpUtils.saveHelpFileContents(graph, resource, currentText);\r
+                Layer0Utils.addCommentMetadata(graph, "Saved SCL Module " + graph.getRelatedValue2(resource, Layer0.getInstance(graph).HasName, Bindings.STRING));\r
+            }\r
+        });\r
+    }\r
+\r
+    @Override\r
+    protected IRunnableContext getOperationRunner(IProgressMonitor monitor) {\r
+        return null;\r
+    }\r
+    \r
+    @Override\r
+    public boolean isModifiable(Object element) {\r
+        return !errorHappened;\r
+    }\r
+    \r
+    @Override\r
+    public boolean isReadOnly(Object element) {\r
+        return errorHappened;\r
+    }\r
+\r
+    @Override\r
+    public boolean canSaveDocument(Object element) {\r
+        return !errorHappened && !getDocument(element).get().equals(currentText);\r
+    }\r
+\r
+}\r