--- /dev/null
+package org.simantics.document.ui;\r
+\r
+import org.eclipse.jface.text.BadLocationException;\r
+import org.eclipse.jface.text.IDocument;\r
+import org.eclipse.jface.text.ITextSelection;\r
+import org.eclipse.jface.text.ITextViewer;\r
+import org.eclipse.jface.text.contentassist.ICompletionProposal;\r
+import org.eclipse.jface.text.contentassist.IContentAssistProcessor;\r
+import org.eclipse.jface.text.contentassist.IContextInformation;\r
+import org.eclipse.jface.text.contentassist.IContextInformationValidator;\r
+\r
+public class CSSCompletionAssistProcessor implements IContentAssistProcessor {\r
+ \r
+ private String lastError = "";\r
+ private CSSTextEditorEnvironment environment;\r
+ \r
+ public CSSCompletionAssistProcessor(CSSTextEditorEnvironment environment) {\r
+ this.environment = environment;\r
+ }\r
+\r
+ @Override\r
+ public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int tmpOffset) {\r
+ ITextSelection selection= (ITextSelection) viewer.getSelectionProvider().getSelection();\r
+ // adjust offset to end of normalized selection\r
+ if (selection.getOffset() == tmpOffset)\r
+ tmpOffset = selection.getOffset() + selection.getLength();\r
+ final int offset = tmpOffset;\r
+ IDocument document = viewer.getDocument();\r
+ String tmpPrefix = "";\r
+ try {\r
+ tmpPrefix = getPrefix(document, offset);\r
+ } catch (BadLocationException e) {\r
+ e.printStackTrace();\r
+ }\r
+ environment.updateEnvironment(document);\r
+ return environment.getCompletionProposals(tmpPrefix, offset);\r
+ }\r
+ \r
+ private static String getPrefix(IDocument doc, int offset) throws BadLocationException {\r
+ if (doc == null || offset >= doc.getLength())\r
+ return "";\r
+\r
+ int length= 0;\r
+ while (--offset >= 0 && Character.isJavaIdentifierPart(doc.getChar(offset)) || doc.getChar(offset) == '.')\r
+ length++;\r
+\r
+ return doc.get(offset + 1, length);\r
+ }\r
+ \r
+ @Override\r
+ public IContextInformation[] computeContextInformation(ITextViewer viewer, int offset) {\r
+ return null;\r
+ }\r
+\r
+ private static final char[] AUTO_ACTIVATION_CHARS = new char[] { '.', '(' };\r
+ \r
+ @Override\r
+ public char[] getCompletionProposalAutoActivationCharacters() {\r
+ return AUTO_ACTIVATION_CHARS;\r
+ }\r
+\r
+ @Override\r
+ public char[] getContextInformationAutoActivationCharacters() {\r
+ return null;\r
+ }\r
+\r
+ @Override\r
+ public String getErrorMessage() {\r
+ return lastError;\r
+ }\r
+\r
+ @Override\r
+ public IContextInformationValidator getContextInformationValidator() {\r
+ return null;\r
+ }\r
+\r
+}\r