X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.scl.ui%2Fsrc%2Forg%2Fsimantics%2Fscl%2Fui%2Feditor%2Fcompletion%2FSCLCompletionAssistProcessor.java;fp=bundles%2Forg.simantics.scl.ui%2Fsrc%2Forg%2Fsimantics%2Fscl%2Fui%2Feditor%2Fcompletion%2FSCLCompletionAssistProcessor.java;h=8d9a56b8555e390c6fc64754c7ef23ba00f70256;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.scl.ui/src/org/simantics/scl/ui/editor/completion/SCLCompletionAssistProcessor.java b/bundles/org.simantics.scl.ui/src/org/simantics/scl/ui/editor/completion/SCLCompletionAssistProcessor.java
new file mode 100644
index 000000000..8d9a56b85
--- /dev/null
+++ b/bundles/org.simantics.scl.ui/src/org/simantics/scl/ui/editor/completion/SCLCompletionAssistProcessor.java
@@ -0,0 +1,79 @@
+package org.simantics.scl.ui.editor.completion;
+
+import org.eclipse.jface.text.BadLocationException;
+import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.ITextSelection;
+import org.eclipse.jface.text.ITextViewer;
+import org.eclipse.jface.text.contentassist.ICompletionProposal;
+import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
+import org.eclipse.jface.text.contentassist.IContextInformation;
+import org.eclipse.jface.text.contentassist.IContextInformationValidator;
+
+public class SCLCompletionAssistProcessor implements IContentAssistProcessor {
+    
+//    private String lastPrefix = null;
+    private String lastError = "";
+    private SCLTextEditorEnvironment sclTextEditorEnvironment;
+    
+    public SCLCompletionAssistProcessor(SCLTextEditorEnvironment sclTextEditorEnvironment) {
+        this.sclTextEditorEnvironment = sclTextEditorEnvironment;
+    }
+
+    @Override
+    public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int tmpOffset) {
+        ITextSelection selection= (ITextSelection) viewer.getSelectionProvider().getSelection();
+        // adjust offset to end of normalized selection
+        if (selection.getOffset() == tmpOffset)
+            tmpOffset = selection.getOffset() + selection.getLength();
+        final int offset = tmpOffset;
+        IDocument document = viewer.getDocument();
+        String tmpPrefix = "";
+        try {
+            tmpPrefix = getPrefix(document, offset);
+        } catch (BadLocationException e) {
+            e.printStackTrace();
+        }
+        sclTextEditorEnvironment.updateEnvironment(document);
+        return sclTextEditorEnvironment.getCompletionProposals(tmpPrefix, offset);
+    }
+    
+    private static String getPrefix(IDocument doc, int offset) throws BadLocationException {
+        int docLen = doc.getLength();
+        if (doc == null || offset > docLen || docLen == 0)
+            return "";
+
+        int length= 0;
+        while (--offset >= 0 && Character.isJavaIdentifierPart(doc.getChar(offset)) || doc.getChar(offset) == '.')
+            length++;
+
+        return doc.get(offset + 1, length);
+    }
+    
+    @Override
+    public IContextInformation[] computeContextInformation(ITextViewer viewer, int offset) {
+        return null;
+    }
+
+    private static final char[] AUTO_ACTIVATION_CHARS = new char[] { '.', '(' };
+    
+    @Override
+    public char[] getCompletionProposalAutoActivationCharacters() {
+        return AUTO_ACTIVATION_CHARS;
+    }
+
+    @Override
+    public char[] getContextInformationAutoActivationCharacters() {
+        return null;
+    }
+
+    @Override
+    public String getErrorMessage() {
+        return lastError;
+    }
+
+    @Override
+    public IContextInformationValidator getContextInformationValidator() {
+        return null;
+    }
+
+}