/*=============================================================================#
 # Copyright (c) 2005, 2021 Stephan Wahlbrink and others.
 # 
 # This program and the accompanying materials are made available under the
 # terms of the Eclipse Public License 2.0 which is available at
 # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
 # which is available at https://www.apache.org/licenses/LICENSE-2.0.
 # 
 # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
 # 
 # Contributors:
 #     Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation
 #=============================================================================*/

package org.eclipse.statet.ecommons.text.ui;

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.ui.texteditor.ITextEditorActionDefinitionIds;


public class TextHandlerUtil {
	
	
	private static final boolean IS_MAC, IS_GTK, IS_MOTIF;
	static {
		final String platform= SWT.getPlatform();
		IS_MAC= "carbon".equals(platform) || "cocoa".equals(platform);
		IS_GTK= "gtk".equals(platform);
		IS_MOTIF= "motif".equals(platform);
	}
	
	
	public static void disable(final StyledText widget, final String commandId) {
		if (commandId.equals(ITextEditorActionDefinitionIds.DELETE_NEXT)) {
			widget.setKeyBinding(SWT.DEL, SWT.NULL);
			if (IS_MAC) {
				widget.setKeyBinding((SWT.DEL | SWT.MOD2), SWT.NULL);
			}
		}
		else if (commandId.equals(ITextEditorActionDefinitionIds.WORD_NEXT)) {
			if (IS_MAC) {
				widget.setKeyBinding((SWT.MOD3 | SWT.ARROW_RIGHT), SWT.NULL);
			}
			else {
				widget.setKeyBinding((SWT.MOD1 | SWT.ARROW_RIGHT), SWT.NULL);
			}
		}
		else if (commandId.equals(ITextEditorActionDefinitionIds.WORD_PREVIOUS)) {
			if (IS_MAC) {
				widget.setKeyBinding((SWT.MOD3 | SWT.ARROW_LEFT), SWT.NULL);
			}
			else {
				widget.setKeyBinding((SWT.MOD1 | SWT.ARROW_LEFT), SWT.NULL);
			}
		}
		else if (commandId.equals(ITextEditorActionDefinitionIds.SELECT_WORD_NEXT)) {
			if (IS_MAC) {
				widget.setKeyBinding((SWT.MOD2 | SWT.MOD3 | SWT.ARROW_RIGHT), SWT.NULL);
			}
			else {
				widget.setKeyBinding((SWT.MOD1 | SWT.MOD2 | SWT.ARROW_RIGHT), SWT.NULL);
			}
		}
		else if (commandId.equals(ITextEditorActionDefinitionIds.SELECT_WORD_PREVIOUS)) {
			if (IS_MAC) {
				widget.setKeyBinding((SWT.MOD2 | SWT.MOD3 | SWT.ARROW_LEFT), SWT.NULL);
			}
			else {
				widget.setKeyBinding((SWT.MOD1 | SWT.MOD2 | SWT.ARROW_LEFT), SWT.NULL);
			}
		}
		else if (commandId.equals(ITextEditorActionDefinitionIds.DELETE_NEXT_WORD)) {
			widget.setKeyBinding((SWT.MOD1 | SWT.DEL), SWT.NULL);
			if (IS_MAC) {
				widget.setKeyBinding((SWT.MOD3 | SWT.DEL), SWT.NULL);
			}
		}
		else if (commandId.equals(ITextEditorActionDefinitionIds.DELETE_PREVIOUS_WORD)) {
			widget.setKeyBinding((SWT.MOD1 | SWT.BS), SWT.NULL);
			if (IS_MAC) {
				widget.setKeyBinding((SWT.MOD3 | SWT.BS), SWT.NULL);
			}
		}
	}
	
}