/*******************************************************************************
* Copyright (c) 2005, 2008 IBM Corporation and others.
* 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jface.fieldassist;
import org.eclipse.jface.util.Util;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Control;
/**
* An {@link IControlContentAdapter} for SWT Combo controls. This is a
* convenience class for easily creating a {@link ContentProposalAdapter} for
* combo fields.
*
* @since 3.2
*/
public class ComboContentAdapter 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 = !Util.isCarbon();
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.dialogs.taskassistance.IControlContentAdapter#getControlContents(org.eclipse.swt.widgets.Control)
*/
public String getControlContents(Control control) {
return ((Combo) control).getText();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.fieldassist.IControlContentAdapter#setControlContents(org.eclipse.swt.widgets.Control,
* java.lang.String, int)
*/
public void setControlContents(Control control, String text,
int cursorPosition) {
((Combo) control).setText(text);
((Combo) control)
.setSelection(new Point(cursorPosition, cursorPosition));
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.fieldassist.IControlContentAdapter#insertControlContents(org.eclipse.swt.widgets.Control,
* java.lang.String, int)
*/
public void insertControlContents(Control control, String text,
int cursorPosition) {
Combo combo = (Combo) 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);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.fieldassist.IControlContentAdapter#getCursorPosition(org.eclipse.swt.widgets.Control)
*/
public int getCursorPosition(Control control) {
return ((Combo) control).getSelection().x;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.fieldassist.IControlContentAdapter#getInsertionBounds(org.eclipse.swt.widgets.Control)
*/
public Rectangle getInsertionBounds(Control control) {
// This doesn't take horizontal scrolling into affect.
// see https://bugs.eclipse.org/bugs/show_bug.cgi?id=204599
Combo combo = (Combo) 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);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.fieldassist.IControlContentAdapter#setCursorPosition(org.eclipse.swt.widgets.Control,
* int)
*/
public void setCursorPosition(Control control, int index) {
((Combo) control).setSelection(new Point(index, index));
}
/**
* @see org.eclipse.jface.fieldassist.IControlContentAdapter2#getSelection(org.eclipse.swt.widgets.Control)
*
* @since 3.4
*/
public Point getSelection(Control control) {
return ((Combo) control).getSelection();
}
/**
* @see org.eclipse.jface.fieldassist.IControlContentAdapter2#setSelection(org.eclipse.swt.widgets.Control,
* org.eclipse.swt.graphics.Point)
*
* @since 3.4
*/
public void setSelection(Control control, Point range) {
((Combo) control).setSelection(range);
}
}