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Rich Internet Application Framework for GWT

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/*
 * Sencha GXT 2.3.1 - Sencha for GWT
 * Copyright(c) 2007-2013, Sencha, Inc.
 * [email protected]
 * 
 * http://www.sencha.com/products/gxt/license/
 */
 package com.extjs.gxt.ui.client.widget.layout;

import com.extjs.gxt.ui.client.Style.Orientation;
import com.extjs.gxt.ui.client.core.El;
import com.extjs.gxt.ui.client.util.Size;
import com.extjs.gxt.ui.client.widget.Component;
import com.extjs.gxt.ui.client.widget.Container;

/**
 * FillLayout places its components in a single row or column,
 * forcing them to be the same size.
 * 
 * 
 * Each components margins can be specified by using a FillData instance for
 * each child. Only 1 component should specify a margin on adjacent sides.
 */
public class FillLayout extends RowLayout {

  /**
   * Creates a new vertical fill layout.
   */
  public FillLayout() {

  }

  /**
   * Creates a new fill layout with the given orientation.
   * 
   * @param orientation the orientation
   */
  public FillLayout(Orientation orientation) {
    super(orientation);
  }

  @Override
  protected void layoutHorizontal(El target) {
    for (Component c : this.container.getItems()) {
      c.addStyleName("x-column");
    }

    Size size = target.getStyleSize();

    int w = size.width;
    int h = size.height;

    int count = container.getItemCount();
    for (int i = 0; i < count; i++) {
      Component c = container.getItem(i);
      int width = (w / count) - getSideMargins(c);
      int height = h - c.el().getMargins("tb");
      setSize(c, width, height);
    }
  }

  @Override
  protected void layoutVertical(El target) {
    Size size = target.getStyleSize();

    int w = size.width;
    int h = size.height;

    int count = container.getItemCount();
    for (int i = 0; i < count; i++) {
      Component c = container.getItem(i);
      int width = w - getSideMargins(c);
      int height = (h / count) - c.el().getMargins("tb");
      setSize(c, width, height);
    }
  }

  @Override
  protected void onLayout(Container container, El target) {
    super.onLayout(container, target);
    target.setStyleAttribute("position", "");
  }

}