1 files changed, 110 insertions, 0 deletions
diff --git a/org.eclipse.m2e.editor.xml/src/main/java/org/eclipse/m2e/editor/xml/InsertExpressionProposal.java b/org.eclipse.m2e.editor.xml/src/main/java/org/eclipse/m2e/editor/xml/InsertExpressionProposal.java
new file mode 100644
index 00000000..1424e7b6
--- /dev/null
+++ b/org.eclipse.m2e.editor.xml/src/main/java/org/eclipse/m2e/editor/xml/InsertExpressionProposal.java
@@ -0,0 +1,110 @@
+package org.eclipse.m2e.editor.xml;
+
+import org.apache.maven.model.InputLocation;
+import org.apache.maven.model.InputSource;
+import org.apache.maven.model.Model;
+import org.apache.maven.project.MavenProject;
+
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.jface.text.BadLocationException;
+import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.Region;
+import org.eclipse.jface.text.contentassist.ICompletionProposal;
+import org.eclipse.jface.text.contentassist.ICompletionProposalExtension5;
+import org.eclipse.jface.text.contentassist.IContextInformation;
+import org.eclipse.jface.text.source.ISourceViewer;
+import org.eclipse.osgi.util.NLS;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.graphics.Point;
+
+import org.eclipse.m2e.core.project.IMavenProjectFacade;
+import org.eclipse.m2e.editor.xml.internal.Messages;
+/**
+ * insertion proposal for ${ expressions
+ * @author mkleint
+ *
+ */
+public class InsertExpressionProposal implements ICompletionProposal, ICompletionProposalExtension5 {
+
+  private IMavenProjectFacade project;
+  private String key;
+  private Region region;
+  private ISourceViewer sourceViewer;
+  private int len = 0;
+
+  public InsertExpressionProposal(ISourceViewer sourceViewer, Region region, String key, IMavenProjectFacade mvnproject) {
+    assert project != null;
+    this.sourceViewer = sourceViewer;
+    this.region = region;
+    this.key = key;
+    this.project = mvnproject;
+  }
+
+  public Object getAdditionalProposalInfo(IProgressMonitor monitor) {
+    String value = PomTemplateContext.simpleInterpolate(project.getProject(), "${" + key + "}"); //$NON-NLS-1$ //$NON-NLS-2$
+    MavenProject mavprj = project.getMavenProject();
+    String loc = null;
+    if (mavprj != null) {
+      Model mdl = mavprj.getModel();
+      if (mdl.getProperties() != null && mdl.getProperties().containsKey(key)) {
+        if (mdl.getLocation("properties") != null) {
+          InputLocation location = mdl.getLocation("properties").getLocation(key); //$NON-NLS-1$
+          if (location != null) {
+            //MNGECLIPSE-2539 apparently you can have an InputLocation with null input source.
+            // check!
+            InputSource source = location.getSource();
+            if (source != null) {
+              loc = source.getModelId();
+            }
+          }
+        }
+      }
+    }
+    StringBuffer buff = new StringBuffer();
+    buff.append("<html>"); //$NON-NLS-1$
+    if (value != null) {
+      buff.append(NLS.bind(Messages.InsertExpressionProposal_hint1, value));
+    }
+    if (loc != null) {
+      buff.append(NLS.bind(Messages.InsertExpressionProposal_hint2, loc));
+    }
+    buff.append("</html>"); //$NON-NLS-1$
+    return buff.toString();
+  }
+
+  public void apply(IDocument document) {
+    int offset = region.getOffset();
+    String replace = "${" + key + "}"; //$NON-NLS-1$ //$NON-NLS-2$
+    try {
+      document.replace(offset, region.getLength(), replace);
+      len = replace.length();
+    } catch(BadLocationException e) {
+      // TODO Auto-generated catch block
+      e.printStackTrace();
+    }
+
+  }
+
+  public Point getSelection(IDocument document) {
+    return new Point(region.getOffset() + len, 0);
+  }
+
+  public String getAdditionalProposalInfo() {
+    //not used anymore
+    return null;
+  }
+
+  public String getDisplayString() {
+    return "${" + key + "}"; //$NON-NLS-1$ //$NON-NLS-2$
+  }
+
+  public Image getImage() {
+    // TODO  what kind of icon to use?
+    return null;
+  }
+
+  public IContextInformation getContextInformation() {
+    return null;
+  }
+
+}