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-/**
- * $Id: mxStackLayout.js,v 1.47 2012-12-14 08:54:34 gaudenz Exp $
- * Copyright (c) 2006-2010, JGraph Ltd
- */
-/**
- * Class: mxStackLayout
- *
- * Extends <mxGraphLayout> to create a horizontal or vertical stack of the
- * child vertices. The children do not need to be connected for this layout
- * to work.
- *
- * Example:
- *
- * (code)
- * var layout = new mxStackLayout(graph, true);
- * layout.execute(graph.getDefaultParent());
- * (end)
- *
- * Constructor: mxStackLayout
- *
- * Constructs a new stack layout layout for the specified graph,
- * spacing, orientation and offset.
- */
-function mxStackLayout(graph, horizontal, spacing, x0, y0, border)
-{
- mxGraphLayout.call(this, graph);
- this.horizontal = (horizontal != null) ? horizontal : true;
- this.spacing = (spacing != null) ? spacing : 0;
- this.x0 = (x0 != null) ? x0 : 0;
- this.y0 = (y0 != null) ? y0 : 0;
- this.border = (border != null) ? border : 0;
-};
-
-/**
- * Extends mxGraphLayout.
- */
-mxStackLayout.prototype = new mxGraphLayout();
-mxStackLayout.prototype.constructor = mxStackLayout;
-
-/**
- * Variable: horizontal
- *
- * Specifies the orientation of the layout. Default is true.
- */
-mxStackLayout.prototype.horizontal = null;
-
-/**
- * Variable: spacing
- *
- * Specifies the spacing between the cells. Default is 0.
- */
-mxStackLayout.prototype.spacing = null;
-
-/**
- * Variable: x0
- *
- * Specifies the horizontal origin of the layout. Default is 0.
- */
-mxStackLayout.prototype.x0 = null;
-
-/**
- * Variable: y0
- *
- * Specifies the vertical origin of the layout. Default is 0.
- */
-mxStackLayout.prototype.y0 = null;
-
-/**
- * Variable: border
- *
- * Border to be added if fill is true. Default is 0.
- */
-mxStackLayout.prototype.border = 0;
-
-/**
- * Variable: keepFirstLocation
- *
- * Boolean indicating if the location of the first cell should be
- * kept, that is, it will not be moved to x0 or y0.
- */
-mxStackLayout.prototype.keepFirstLocation = false;
-
-/**
- * Variable: fill
- *
- * Boolean indicating if dimension should be changed to fill out the parent
- * cell. Default is false.
- */
-mxStackLayout.prototype.fill = false;
-
-/**
- * Variable: resizeParent
- *
- * If the parent should be resized to match the width/height of the
- * stack. Default is false.
- */
-mxStackLayout.prototype.resizeParent = false;
-
-/**
- * Variable: resizeLast
- *
- * If the last element should be resized to fill out the parent. Default is
- * false. If <resizeParent> is true then this is ignored.
- */
-mxStackLayout.prototype.resizeLast = false;
-
-/**
- * Variable: wrap
- *
- * Value at which a new column or row should be created. Default is null.
- */
-mxStackLayout.prototype.wrap = null;
-
-/**
- * Function: isHorizontal
- *
- * Returns <horizontal>.
- */
-mxStackLayout.prototype.isHorizontal = function()
-{
- return this.horizontal;
-};
-
-/**
- * Function: moveCell
- *
- * Implements <mxGraphLayout.moveCell>.
- */
-mxStackLayout.prototype.moveCell = function(cell, x, y)
-{
- var model = this.graph.getModel();
- var parent = model.getParent(cell);
- var horizontal = this.isHorizontal();
-
- if (cell != null && parent != null)
- {
- var i = 0;
- var last = 0;
- var childCount = model.getChildCount(parent);
- var value = (horizontal) ? x : y;
- var pstate = this.graph.getView().getState(parent);
-
- if (pstate != null)
- {
- value -= (horizontal) ? pstate.x : pstate.y;
- }
-
- for (i = 0; i < childCount; i++)
- {
- var child = model.getChildAt(parent, i);
-
- if (child != cell)
- {
- var bounds = model.getGeometry(child);
-
- if (bounds != null)
- {
- var tmp = (horizontal) ?
- bounds.x + bounds.width / 2 :
- bounds.y + bounds.height / 2;
-
- if (last < value && tmp > value)
- {
- break;
- }
-
- last = tmp;
- }
- }
- }
-
- // Changes child order in parent
- var idx = parent.getIndex(cell);
- idx = Math.max(0, i - ((i > idx) ? 1 : 0));
-
- model.add(parent, cell, idx);
- }
-};
-
-/**
- * Function: getParentSize
- *
- * Returns the size for the parent container or the size of the graph
- * container if the parent is a layer or the root of the model.
- */
-mxStackLayout.prototype.getParentSize = function(parent)
-{
- var model = this.graph.getModel();
- var pgeo = model.getGeometry(parent);
-
- // Handles special case where the parent is either a layer with no
- // geometry or the current root of the view in which case the size
- // of the graph's container will be used.
- if (this.graph.container != null && ((pgeo == null &&
- model.isLayer(parent)) || parent == this.graph.getView().currentRoot))
- {
- var width = this.graph.container.offsetWidth - 1;
- var height = this.graph.container.offsetHeight - 1;
- pgeo = new mxRectangle(0, 0, width, height);
- }
-
- return pgeo;
-};
-
-/**
- * Function: execute
- *
- * Implements <mxGraphLayout.execute>.
- *
- * Only children where <isVertexIgnored> returns false are taken into
- * account.
- */
-mxStackLayout.prototype.execute = function(parent)
-{
- if (parent != null)
- {
- var horizontal = this.isHorizontal();
- var model = this.graph.getModel();
- var pgeo = this.getParentSize(parent);
-
- var fillValue = 0;
-
- if (pgeo != null)
- {
- fillValue = (horizontal) ? pgeo.height : pgeo.width;
- }
-
- fillValue -= 2 * this.spacing + 2 * this.border;
- var x0 = this.x0 + this.border;
- var y0 = this.y0 + this.border;
-
- // Handles swimlane start size
- if (this.graph.isSwimlane(parent))
- {
- // Uses computed style to get latest
- var style = this.graph.getCellStyle(parent);
- var start = mxUtils.getValue(style, mxConstants.STYLE_STARTSIZE, mxConstants.DEFAULT_STARTSIZE);
- var horz = mxUtils.getValue(style, mxConstants.STYLE_HORIZONTAL, true);
-
- if (horizontal == horz)
- {
- fillValue -= start;
- }
-
- if (horizontal)
- {
- y0 += start;
- }
- else
- {
- x0 += start;
- }
- }
-
- model.beginUpdate();
- try
- {
- var tmp = 0;
- var last = null;
- var childCount = model.getChildCount(parent);
-
- for (var i = 0; i < childCount; i++)
- {
- var child = model.getChildAt(parent, i);
-
- if (!this.isVertexIgnored(child) && this.isVertexMovable(child))
- {
- var geo = model.getGeometry(child);
-
- if (geo != null)
- {
- geo = geo.clone();
-
- if (this.wrap != null && last != null)
- {
- if ((horizontal && last.x + last.width +
- geo.width + 2 * this.spacing > this.wrap) ||
- (!horizontal && last.y + last.height +
- geo.height + 2 * this.spacing > this.wrap))
- {
- last = null;
-
- if (horizontal)
- {
- y0 += tmp + this.spacing;
- }
- else
- {
- x0 += tmp + this.spacing;
- }
-
- tmp = 0;
- }
- }
-
- tmp = Math.max(tmp, (horizontal) ? geo.height : geo.width);
-
- if (last != null)
- {
- if (horizontal)
- {
- geo.x = last.x + last.width + this.spacing;
- }
- else
- {
- geo.y = last.y + last.height + this.spacing;
- }
- }
- else if (!this.keepFirstLocation)
- {
- if (horizontal)
- {
- geo.x = x0;
- }
- else
- {
- geo.y = y0;
- }
- }
-
- if (horizontal)
- {
- geo.y = y0;
- }
- else
- {
- geo.x = x0;
- }
-
- if (this.fill && fillValue > 0)
- {
- if (horizontal)
- {
- geo.height = fillValue;
- }
- else
- {
- geo.width = fillValue;
- }
- }
-
- model.setGeometry(child, geo);
- last = geo;
- }
- }
- }
-
- if (this.resizeParent && pgeo != null && last != null &&
- !this.graph.isCellCollapsed(parent))
- {
- pgeo = pgeo.clone();
-
- if (horizontal)
- {
- pgeo.width = last.x + last.width + this.spacing;
- }
- else
- {
- pgeo.height = last.y + last.height + this.spacing;
- }
-
- model.setGeometry(parent, pgeo);
- }
- else if (this.resizeLast && pgeo != null && last != null)
- {
- if (horizontal)
- {
- last.width = pgeo.width - last.x - this.spacing;
- }
- else
- {
- last.height = pgeo.height - last.y - this.spacing;
- }
- }
- }
- finally
- {
- model.endUpdate();
- }
- }
-};