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/**
* @preserve jLayout Grid Layout - JavaScript Layout Algorithms v0.41
*
* Licensed under the new BSD License.
* Copyright 2008-2009, Bram Stein
* All rights reserved.
*/
/*global jLayout:true */
(function () {
jLayout = (typeof jLayout === 'undefined') ? {} : jLayout;
jLayout.grid = function (spec, shared) {
var my = shared || {},
that = {};
my.hgap = spec.hgap || 0;
my.vgap = spec.vgap || 0;
// initialize the number of columns to the number of items
// we're laying out.
my.items = spec.items || [];
my.columns = spec.columns || my.items.length;
my.rows = spec.rows || 0;
my.fillVertical = spec.fill && spec.fill === 'vertical';
if (my.rows > 0) {
my.columns = Math.floor((my.items.length + my.rows - 1) / my.rows);
} else {
my.rows = Math.floor((my.items.length + my.columns - 1) / my.columns);
}
that.items = function () {
var r = [];
Array.prototype.push.apply(r, my.items);
return r;
};
that.layout = function (container) {
var i, j,
insets = container.insets(),
x = insets.left,
y = insets.top,
width = (container.bounds().width - (insets.left + insets.right) - (my.columns - 1) * my.hgap) / my.columns,
height = (container.bounds().height - (insets.top + insets.bottom) - (my.rows - 1) * my.vgap) / my.rows;
for (i = 0, j = 1; i < my.items.length; i += 1, j += 1) {
my.items[i].bounds({'x': x, 'y': y, 'width': width, 'height': height});
if (!my.fillVertical) {
if (j >= my.columns) {
y += height + my.vgap;
x = insets.left;
j = 0;
}
else {
x += width + my.hgap;
}
} else {
if (j >= my.rows) {
x += width + my.hgap;
y = insets.top;
j = 0;
} else {
y += height + my.vgap;
}
}
my.items[i].doLayout();
}
return container;
};
function typeLayout(type) {
return function (container) {
var i = 0,
width = 0,
height = 0,
type_size,
insets = container.insets();
for (; i < my.items.length; i += 1) {
type_size = my.items[i][type + 'Size']();
width = Math.max(width, type_size.width);
height = Math.max(height, type_size.height);
}
return {
'width': insets.left + insets.right + my.columns * width + (my.columns - 1) * my.hgap,
'height': insets.top + insets.bottom + my.rows * height + (my.rows - 1) * my.vgap
};
};
}
// this creates the min and preferred size methods, as they
// only differ in the function they call.
that.preferred = typeLayout('preferred');
that.minimum = typeLayout('minimum');
that.maximum = typeLayout('maximum');
return that;
};
}());
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