/*=============================================================================#
 # Copyright (c) 2012, 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.emf.ui.forms;

import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Layout;
import org.eclipse.ui.forms.widgets.ColumnLayout;
import org.eclipse.ui.forms.widgets.TableWrapLayout;

import org.eclipse.statet.ecommons.ui.util.LayoutUtils;


public class EFLayoutUtil {
	
	
	public static final int MAIN_H_SPACING= 20;
	public static final int MAIN_V_SPACING= 17;
	
	public static final int SECTION_HEADER_V_SPACING= 6;
	
	// SECTION CLIENT
	public static final int SECTION_CLIENT_MARGIN_TOP= 5;
	public static final int SECTION_CLIENT_MARGIN_BOTTOM= SECTION_CLIENT_MARGIN_TOP;
	// Should be 6; but, we minus 4 because the section automatically pads the
	// left margin by that amount
	public static final int SECTION_CLIENT_MARGIN_LEFT= 2;
	// Should be 6; but, we minus 4 because the section automatically pads the
	// right margin by that amount	
	public static final int SECTION_CLIENT_MARGIN_RIGHT= 2;
	public static final int SECTION_CLIENT_H_SPACING= 5;
	public static final int SECTION_CLIENT_V_SPACING= SECTION_CLIENT_H_SPACING;
	
	public static final int PROP_DEFAULT_NUMCOLUMNS= 3;
	
	
	public static TableWrapLayout createBodyTableLayout(final int numColumns) {
		final TableWrapLayout layout= new TableWrapLayout();
		
		layout.topMargin= 12;
		layout.bottomMargin= 12;
		layout.leftMargin= 6;
		layout.rightMargin= 6;
		
		layout.horizontalSpacing= MAIN_H_SPACING;
		layout.verticalSpacing= MAIN_V_SPACING;
		
		layout.numColumns= numColumns;
		
		return layout;
	}
	
	public static TableWrapLayout createPropertiesTableLayout(final int numColumns) {
		final TableWrapLayout layout= new TableWrapLayout();
		
		layout.topMargin= 6;
		layout.bottomMargin= 6;
		layout.leftMargin= 6;
		layout.rightMargin= 6;
		
		layout.horizontalSpacing= MAIN_H_SPACING;
		layout.verticalSpacing= MAIN_V_SPACING;
		
		layout.numColumns= numColumns;
		
		return layout;
	}
	
	public static ColumnLayout createMainColumnLayout() {
		final ColumnLayout layout= new ColumnLayout();
		
		layout.topMargin= 0;
		layout.bottomMargin= 0;
		layout.leftMargin= 0;
		layout.rightMargin= 0;
		
		layout.horizontalSpacing= MAIN_H_SPACING;
		layout.verticalSpacing= MAIN_V_SPACING;
		
		return layout;
	}
	
	public static TableWrapLayout createMainTableLayout(final int numColumns) {
		final TableWrapLayout layout= new TableWrapLayout();
		
		layout.topMargin= 0;
		layout.bottomMargin= 0;
		layout.leftMargin= 0;
		layout.rightMargin= 0;
		
		layout.horizontalSpacing= MAIN_H_SPACING;
		layout.verticalSpacing= MAIN_V_SPACING;
		
		layout.numColumns= numColumns;
		
		return layout;
	}
	
	public static Layout createMainSashLeftLayout(final int numColumns) {
		final GridLayout layout= new GridLayout();
		
		layout.marginHeight= 0;
		layout.marginWidth= 0;
		
		layout.marginTop= 0;
		layout.marginBottom= 0;
		layout.marginLeft= 0;
		layout.marginRight= (MAIN_H_SPACING - 2) / 2;
		
		layout.horizontalSpacing= MAIN_H_SPACING;
		layout.verticalSpacing= MAIN_V_SPACING;
		
		layout.numColumns= numColumns;
		
		return layout;
	}
	
	public static Layout createMainSashRightLayout(final int numColumns) {
		final TableWrapLayout layout= new TableWrapLayout();
		
		layout.topMargin= 0;
		layout.bottomMargin= 0;
		layout.leftMargin= (MAIN_H_SPACING - 2) / 2;
		layout.rightMargin= 0;
		
		layout.horizontalSpacing= MAIN_H_SPACING;
		layout.verticalSpacing= MAIN_V_SPACING;
		
		layout.numColumns= numColumns;
		
		return layout;
	}
	
//	public static GridLayout createMainSashLeftLayout(final int numColumns) {
//		final GridLayout layout= new GridLayout();
//		
//		layout.marginHeight= 0;
//		layout.marginWidth= 0;
//		
//		layout.marginTop= 0;
//		layout.marginBottom= 0;
//		layout.marginLeft= 0;
//		layout.marginRight= (MAIN_H_SPACING - 2) / 2;
//		
//		layout.horizontalSpacing= MAIN_H_SPACING;
//		layout.verticalSpacing= MAIN_V_SPACING;
//		
//		layout.numColumns= numColumns;
//		
//		return layout;
//	}
//	
//	public static GridLayout createMainSashRightLayout(final int numColumns) {
//		final GridLayout layout= new GridLayout();
//		
//		layout.marginHeight= 0;
//		layout.marginWidth= 0;
//		
//		layout.marginTop= 0;
//		layout.marginBottom= 0;
//		layout.marginLeft= (MAIN_H_SPACING - 2) / 2;
//		layout.marginRight= 0;
//		
//		layout.horizontalSpacing= MAIN_H_SPACING;
//		layout.verticalSpacing= MAIN_V_SPACING;
//		
//		layout.numColumns= numColumns;
//		
//		return layout;
//	}
//	
	public static GridLayout createSectionPropGridLayout() {
		return createSectionPropGridLayout(PROP_DEFAULT_NUMCOLUMNS);
	}
	
	public static GridLayout createSectionPropGridLayout(final int numColumns) {
		final GridLayout layout= new GridLayout();
		
		layout.marginHeight= 0;
		layout.marginWidth= 0;
		
		layout.marginTop= SECTION_CLIENT_MARGIN_TOP;
		layout.marginBottom= SECTION_CLIENT_MARGIN_BOTTOM;
		layout.marginLeft= SECTION_CLIENT_MARGIN_LEFT;
		layout.marginRight= SECTION_CLIENT_MARGIN_RIGHT;
		
		layout.horizontalSpacing= LayoutUtils.defaultHSpacing();
		layout.verticalSpacing= LayoutUtils.defaultVSpacing();
		
		layout.numColumns= numColumns;
		
		return layout;
	}
	
	public static GridLayout createCompositePropGridLayout() {
		return createCompositePropGridLayout(PROP_DEFAULT_NUMCOLUMNS);
	}
	
	public static GridLayout createCompositePropGridLayout(final int numColumns) {
		final GridLayout layout= new GridLayout();
		
		layout.marginHeight= 0;
		layout.marginWidth= 0;
		
		layout.marginTop= 0;
		layout.marginBottom= 0;
		layout.marginLeft= 0;
		layout.marginRight= 0;
		
		layout.horizontalSpacing= LayoutUtils.defaultHSpacing();
		layout.verticalSpacing= LayoutUtils.defaultVSpacing();
		
		layout.numColumns= numColumns;
		
		return layout;
	}
	
//	public static TableWrapLayout createSectionClientTableWrapLayout(int numColumns) {
//		TableWrapLayout layout= new TableWrapLayout();
//		
//		layout.topMargin= SECTION_CLIENT_MARGIN_TOP;
//		layout.bottomMargin= SECTION_CLIENT_MARGIN_BOTTOM;
//		layout.leftMargin= SECTION_CLIENT_MARGIN_LEFT;
//		layout.rightMargin= SECTION_CLIENT_MARGIN_RIGHT;
//		
//		layout.horizontalSpacing= SECTION_CLIENT_HORIZONTAL_SPACING;
//		layout.verticalSpacing= SECTION_CLIENT_VERTICAL_SPACING;
//		
//		layout.numColumns= numColumns;
//		
//		return layout;
//	}
	
	public static GridLayout createCompositeColumnGridLayout(final int numColumns) {
		final GridLayout layout= new GridLayout();
		
		layout.marginHeight= 0;
		layout.marginWidth= 0;
		
		layout.marginTop= 0;
		layout.marginBottom= 0;
		layout.marginLeft= 0;
		layout.marginRight= 0;
		
		layout.horizontalSpacing= 20;
		layout.verticalSpacing= LayoutUtils.defaultVSpacing();
		
		layout.numColumns= numColumns;
		
		return layout;
	}
	
}