/*
 * Ext JS Library 2.0 Copyright(c) 2006-2007, Ext JS, LLC. licensing@extjs.com
 * 
 * http://extjs.com/license
 */

/*
 * These classes are private internal classes
 */
Ext.CenterLayoutRegion = function(mgr, config) {
	Ext.CenterLayoutRegion.superclass.constructor.call(this, mgr, config,
			"center");
	this.visible = true;
	this.minWidth = config.minWidth || 20;
	this.minHeight = config.minHeight || 20;
};

Ext.extend(Ext.CenterLayoutRegion, Ext.LayoutRegion, {
			hide : function() {
				// center panel can't be hidden
			},

			show : function() {
				// center panel can't be hidden
			},

			getMinWidth : function() {
				return this.minWidth;
			},

			getMinHeight : function() {
				return this.minHeight;
			}
		});

Ext.NorthLayoutRegion = function(mgr, config) {
	Ext.NorthLayoutRegion.superclass.constructor.call(this, mgr, config,
			"north", "n-resize");
	if (this.split) {
		this.split.placement = Ext.SplitBar.TOP;
		this.split.orientation = Ext.SplitBar.VERTICAL;
		this.split.el.addClass("x-layout-split-v");
	}
	var size = config.initialSize || config.height;
	if (typeof size != "undefined") {
		this.el.setHeight(size);
	}
};
Ext.extend(Ext.NorthLayoutRegion, Ext.SplitLayoutRegion, {
			orientation : Ext.SplitBar.VERTICAL,
			getBox : function() {
				if (this.collapsed) {
					return this.collapsedEl.getBox();
				}
				var box = this.el.getBox();
				if (this.split) {
					box.height += this.split.el.getHeight();
				}
				return box;
			},

			updateBox : function(box) {
				if (this.split && !this.collapsed) {
					box.height -= this.split.el.getHeight();
					this.split.el.setLeft(box.x);
					this.split.el.setTop(box.y + box.height);
					this.split.el.setWidth(box.width);
				}
				if (this.collapsed) {
					this.updateBody(box.width, null);
				}
				Ext.NorthLayoutRegion.superclass.updateBox.call(this, box);
			}
		});

Ext.SouthLayoutRegion = function(mgr, config) {
	Ext.SouthLayoutRegion.superclass.constructor.call(this, mgr, config,
			"south", "s-resize");
	if (this.split) {
		this.split.placement = Ext.SplitBar.BOTTOM;
		this.split.orientation = Ext.SplitBar.VERTICAL;
		this.split.el.addClass("x-layout-split-v");
	}
	var size = config.initialSize || config.height;
	if (typeof size != "undefined") {
		this.el.setHeight(size);
	}
};
Ext.extend(Ext.SouthLayoutRegion, Ext.SplitLayoutRegion, {
			orientation : Ext.SplitBar.VERTICAL,
			getBox : function() {
				if (this.collapsed) {
					return this.collapsedEl.getBox();
				}
				var box = this.el.getBox();
				if (this.split) {
					var sh = this.split.el.getHeight();
					box.height += sh;
					box.y -= sh;
				}
				return box;
			},

			updateBox : function(box) {
				if (this.split && !this.collapsed) {
					var sh = this.split.el.getHeight();
					box.height -= sh;
					box.y += sh;
					this.split.el.setLeft(box.x);
					this.split.el.setTop(box.y - sh);
					this.split.el.setWidth(box.width);
				}
				if (this.collapsed) {
					this.updateBody(box.width, null);
				}
				Ext.SouthLayoutRegion.superclass.updateBox.call(this, box);
			}
		});

Ext.EastLayoutRegion = function(mgr, config) {
	Ext.EastLayoutRegion.superclass.constructor.call(this, mgr, config, "east",
			"e-resize");
	if (this.split) {
		this.split.placement = Ext.SplitBar.RIGHT;
		this.split.orientation = Ext.SplitBar.HORIZONTAL;
		this.split.el.addClass("x-layout-split-h");
	}
	var size = config.initialSize || config.width;
	if (typeof size != "undefined") {
		this.el.setWidth(size);
	}
};
Ext.extend(Ext.EastLayoutRegion, Ext.SplitLayoutRegion, {
			orientation : Ext.SplitBar.HORIZONTAL,
			getBox : function() {
				if (this.collapsed) {
					return this.collapsedEl.getBox();
				}
				var box = this.el.getBox();
				if (this.split) {
					var sw = this.split.el.getWidth();
					box.width += sw;
					box.x -= sw;
				}
				return box;
			},

			updateBox : function(box) {
				if (this.split && !this.collapsed) {
					var sw = this.split.el.getWidth();
					box.width -= sw;
					this.split.el.setLeft(box.x);
					this.split.el.setTop(box.y);
					this.split.el.setHeight(box.height);
					box.x += sw;
				}
				if (this.collapsed) {
					this.updateBody(null, box.height);
				}
				Ext.EastLayoutRegion.superclass.updateBox.call(this, box);
			}
		});

Ext.WestLayoutRegion = function(mgr, config) {
	Ext.WestLayoutRegion.superclass.constructor.call(this, mgr, config, "west",
			"w-resize");
	if (this.split) {
		this.split.placement = Ext.SplitBar.LEFT;
		this.split.orientation = Ext.SplitBar.HORIZONTAL;
		this.split.el.addClass("x-layout-split-h");
	}
	var size = config.initialSize || config.width;
	if (typeof size != "undefined") {
		this.el.setWidth(size);
	}
};
Ext.extend(Ext.WestLayoutRegion, Ext.SplitLayoutRegion, {
			orientation : Ext.SplitBar.HORIZONTAL,
			getBox : function() {
				if (this.collapsed) {
					return this.collapsedEl.getBox();
				}
				var box = this.el.getBox();
				if (this.split) {
					box.width += this.split.el.getWidth();
				}
				return box;
			},

			updateBox : function(box) {
				if (this.split && !this.collapsed) {
					var sw = this.split.el.getWidth();
					box.width -= sw;
					this.split.el.setLeft(box.x + box.width);
					this.split.el.setTop(box.y);
					this.split.el.setHeight(box.height);
				}
				if (this.collapsed) {
					this.updateBody(null, box.height);
				}
				Ext.WestLayoutRegion.superclass.updateBox.call(this, box);
			}
		});