1 files changed, 96 insertions, 0 deletions
diff --git a/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/search/util/CComboContentAdapter.java b/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/search/util/CComboContentAdapter.java
new file mode 100644
index 00000000..aa465fc1
--- /dev/null
+++ b/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/search/util/CComboContentAdapter.java
@@ -0,0 +1,96 @@
+/*******************************************************************************
+ * Copyright (c) 2008-2010 Sonatype, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *      Sonatype, Inc. - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.m2e.core.ui.internal.search.util;
+
+import org.eclipse.jface.fieldassist.ContentProposalAdapter;
+import org.eclipse.jface.fieldassist.IControlContentAdapter;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.custom.CCombo;
+import org.eclipse.swt.graphics.GC;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.widgets.Control;
+
+
+/**
+ * An {@link IControlContentAdapter} for SWT CCombo controls. This is a convenience class for easily creating a
+ * {@link ContentProposalAdapter} for combo fields.
+ */
+public class CComboContentAdapter implements IControlContentAdapter /*, IControlContentAdapter2 */ {
+
+  /*
+   * Set to <code>true</code> if we should compute the text
+   * vertical bounds rather than just use the field size.
+   * Workaround for https://bugs.eclipse.org/bugs/show_bug.cgi?id=164748
+   * The corresponding SWT bug is
+   * https://bugs.eclipse.org/bugs/show_bug.cgi?id=44072
+   */
+  private static final boolean COMPUTE_TEXT_USING_CLIENTAREA = !"carbon".equals(SWT.getPlatform()); //$NON-NLS-1$
+
+  public String getControlContents(Control control) {
+    return ((CCombo) control).getText();
+  }
+
+  public void setControlContents(Control control, String text, int cursorPosition) {
+    ((CCombo) control).setText(text);
+    ((CCombo) control).setSelection(new Point(cursorPosition, cursorPosition));
+  }
+
+  public void insertControlContents(Control control, String text, int cursorPosition) {
+    CCombo combo = (CCombo) control;
+    String contents = combo.getText();
+    Point selection = combo.getSelection();
+    StringBuffer sb = new StringBuffer();
+    sb.append(contents.substring(0, selection.x));
+    sb.append(text);
+    if(selection.y < contents.length()) {
+      sb.append(contents.substring(selection.y, contents.length()));
+    }
+    combo.setText(sb.toString());
+    selection.x = selection.x + cursorPosition;
+    selection.y = selection.x;
+    combo.setSelection(selection);
+  }
+
+  public int getCursorPosition(Control control) {
+    return ((CCombo) control).getSelection().x;
+  }
+
+  public Rectangle getInsertionBounds(Control control) {
+    // This doesn't take horizontal scrolling into affect. 
+    // see https://bugs.eclipse.org/bugs/show_bug.cgi?id=204599
+    CCombo combo = (CCombo) control;
+    int position = combo.getSelection().y;
+    String contents = combo.getText();
+    GC gc = new GC(combo);
+    gc.setFont(combo.getFont());
+    Point extent = gc.textExtent(contents.substring(0, Math.min(position, contents.length())));
+    gc.dispose();
+    if(COMPUTE_TEXT_USING_CLIENTAREA) {
+      return new Rectangle(combo.getClientArea().x + extent.x, combo.getClientArea().y, 1, combo.getClientArea().height);
+    }
+    return new Rectangle(extent.x, 0, 1, combo.getSize().y);
+  }
+
+  public void setCursorPosition(Control control, int index) {
+    ((CCombo) control).setSelection(new Point(index, index));
+  }
+
+  public Point getSelection(Control control) {
+    return ((CCombo) control).getSelection();
+  }
+
+  public void setSelection(Control control, Point range) {
+    ((CCombo) control).setSelection(range);
+  }
+
+}