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/*******************************************************************************
* 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);
}
}
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