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-/**
- * $Id: mxPartitionLayout.js,v 1.25 2010-01-04 11:18:25 gaudenz Exp $
- * Copyright (c) 2006-2010, JGraph Ltd
- */
-/**
- * Class: mxPartitionLayout
- *
- * Extends <mxGraphLayout> for partitioning the parent cell vertically or
- * horizontally by filling the complete area with the child cells. A horizontal
- * layout partitions the height of the given parent whereas a a non-horizontal
- * layout partitions the width. If the parent is a layer (that is, a child of
- * the root node), then the current graph size is partitioned. The children do
- * not need to be connected for this layout to work.
- *
- * Example:
- *
- * (code)
- * var layout = new mxPartitionLayout(graph, true, 10, 20);
- * layout.execute(graph.getDefaultParent());
- * (end)
- *
- * Constructor: mxPartitionLayout
- *
- * Constructs a new stack layout layout for the specified graph,
- * spacing, orientation and offset.
- */
-function mxPartitionLayout(graph, horizontal, spacing, border)
-{
- mxGraphLayout.call(this, graph);
- this.horizontal = (horizontal != null) ? horizontal : true;
- this.spacing = spacing || 0;
- this.border = border || 0;
-};
-
-/**
- * Extends mxGraphLayout.
- */
-mxPartitionLayout.prototype = new mxGraphLayout();
-mxPartitionLayout.prototype.constructor = mxPartitionLayout;
-
-/**
- * Variable: horizontal
- *
- * Boolean indicating the direction in which the space is partitioned.
- * Default is true.
- */
-mxPartitionLayout.prototype.horizontal = null;
-
-/**
- * Variable: spacing
- *
- * Integer that specifies the absolute spacing in pixels between the
- * children. Default is 0.
- */
-mxPartitionLayout.prototype.spacing = null;
-
-/**
- * Variable: border
- *
- * Integer that specifies the absolute inset in pixels for the parent that
- * contains the children. Default is 0.
- */
-mxPartitionLayout.prototype.border = null;
-
-/**
- * Variable: resizeVertices
- *
- * Boolean that specifies if vertices should be resized. Default is true.
- */
-mxPartitionLayout.prototype.resizeVertices = true;
-
-/**
- * Function: isHorizontal
- *
- * Returns <horizontal>.
- */
-mxPartitionLayout.prototype.isHorizontal = function()
-{
- return this.horizontal;
-};
-
-/**
- * Function: moveCell
- *
- * Implements <mxGraphLayout.moveCell>.
- */
-mxPartitionLayout.prototype.moveCell = function(cell, x, y)
-{
- var model = this.graph.getModel();
- var parent = model.getParent(cell);
-
- if (cell != null &&
- parent != null)
- {
- var i = 0;
- var last = 0;
- var childCount = model.getChildCount(parent);
-
- // Finds index of the closest swimlane
- // TODO: Take into account the orientation
- for (i = 0; i < childCount; i++)
- {
- var child = model.getChildAt(parent, i);
- var bounds = this.getVertexBounds(child);
-
- if (bounds != null)
- {
- var tmp = bounds.x + bounds.width / 2;
-
- if (last < x && tmp > x)
- {
- 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: execute
- *
- * Implements <mxGraphLayout.execute>. All children where <isVertexIgnored>
- * returns false and <isVertexMovable> returns true are modified.
- */
-mxPartitionLayout.prototype.execute = function(parent)
-{
- var horizontal = this.isHorizontal();
- 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);
- }
-
- if (pgeo != null)
- {
- var children = [];
- 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))
- {
- children.push(child);
- }
- }
-
- var n = children.length;
-
- if (n > 0)
- {
- var x0 = this.border;
- var y0 = this.border;
- var other = (horizontal) ? pgeo.height : pgeo.width;
- other -= 2 * this.border;
-
- var size = (this.graph.isSwimlane(parent)) ?
- this.graph.getStartSize(parent) :
- new mxRectangle();
-
- other -= (horizontal) ? size.height : size.width;
- x0 = x0 + size.width;
- y0 = y0 + size.height;
-
- var tmp = this.border + (n - 1) * this.spacing;
- var value = (horizontal) ?
- ((pgeo.width - x0 - tmp) / n) :
- ((pgeo.height - y0 - tmp) / n);
-
- // Avoids negative values, that is values where the sum of the
- // spacing plus the border is larger then the available space
- if (value > 0)
- {
- model.beginUpdate();
- try
- {
- for (var i = 0; i < n; i++)
- {
- var child = children[i];
- var geo = model.getGeometry(child);
-
- if (geo != null)
- {
- geo = geo.clone();
- geo.x = x0;
- geo.y = y0;
-
- if (horizontal)
- {
- if (this.resizeVertices)
- {
- geo.width = value;
- geo.height = other;
- }
-
- x0 += value + this.spacing;
- }
- else
- {
- if (this.resizeVertices)
- {
- geo.height = value;
- geo.width = other;
- }
-
- y0 += value + this.spacing;
- }
-
- model.setGeometry(child, geo);
- }
- }
- }
- finally
- {
- model.endUpdate();
- }
- }
- }
- }
-};