/*
* Ext GWT - Ext for GWT
* Copyright(c) 2007, 2008, Ext JS, LLC.
* licensing@extjs.com
*
* http://extjs.com/license
*/
package com.extjs.gxt.ui.client.widget.layout;
import com.extjs.gxt.ui.client.core.El;
import com.extjs.gxt.ui.client.util.Margins;
import com.extjs.gxt.ui.client.widget.Component;
import com.extjs.gxt.ui.client.widget.Container;
import com.extjs.gxt.ui.client.widget.Layout;
/**
* <code>Layout</code> that simply renders each child component into its
* container. The size and position of children are not altered by this layout.
*
* <p/> Margins can be applied directly to child components to control the
* spacing between components.
*/
public class FlowLayout extends Layout {
private Margins margins;
private boolean removePositioning = false;
/**
* Creates a new layout instance.
*/
public FlowLayout() {
}
/**
* Creates a new flow layout.
*
* @param removePostioning true to remove positioning on child components
*/
public FlowLayout(boolean removePostioning) {
this.setRemovePositioning(removePostioning);
}
/**
* Creates a new layout instance with the given margin.
*
* @param margin the margin
*/
public FlowLayout(int margin) {
setMargins(new Margins(margin));
}
/**
* Returns the margins of the layout.
*
* @return the margins
*/
public Margins getMargins() {
return margins;
}
/**
* Returns true if positioning is being removed.
*
* @return the remove positioning state
*/
public boolean getRemovePositioning() {
return removePositioning;
}
/**
* Sets the margins using the give margin.
*
* @param margin the margin
*/
public void setMargin(int margin) {
setMargins(new Margins(margin));
}
/**
* Sets the margins of the layout to be applied to the container.
*
* @param margins the margins in pixels
*/
public void setMargins(Margins margins) {
this.margins = margins;
}
/**
* True to remove positioning from the container's children (defaults to
* false).
*
* @param removePositioning true to remove positioning
*/
public void setRemovePositioning(boolean removePositioning) {
this.removePositioning = removePositioning;
}
@Override
protected void onLayout(Container container, El target) {
super.onLayout(container, target);
if (margins != null) {
applyMargins(target, margins);
}
}
@Override
protected void renderComponent(Component c, int index, El target) {
super.renderComponent(c, index, target);
if (removePositioning) {
c.setStyleAttribute("position", "static");
}
if (getLayoutData(c) != null && getLayoutData(c) instanceof FlowData) {
FlowData data = (FlowData) getLayoutData(c);
applyMargins(c.el(), data.getMargins());
}
}
}