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/**
* @preserve jLayout Flex Grid Layout - JavaScript Layout Algorithms v0.4
* Based on: http://www.javaworld.com/javaworld/javatips/jw-javatip121.html
*
* Licensed under the new BSD License.
* Copyright 2008-2009, Bram Stein
* All rights reserved.
*/
/*global jLayout:true */
(function () {
jLayout = (typeof jLayout === 'undefined') ? {} : jLayout;
// The flex grid has a dependency on the grid layout, so please make
// sure you include the grid layout manager before the flex grid
// layout manager.
if (typeof jLayout.grid !== 'undefined') {
jLayout.flexGrid = function (spec) {
var my = {},
that = this.grid(spec, my);
function zeroArray(a, l) {
var i = 0;
for (; i < l; i += 1) {
a[i] = 0;
}
return a;
}
function typeLayout(type) {
return function (container) {
var i = 0, r = 0, c = 0, nw = 0, nh = 0,
w = zeroArray([], my.columns),
h = zeroArray([], my.rows),
type_size,
insets = container.insets();
for (i = 0; i < my.items.length; i += 1) {
r = Math.floor(i / my.columns);
c = i % my.columns;
type_size = my.items[i][type + 'Size']();
if (w[c] < type_size.width) {
w[c] = type_size.width;
}
if (h[r] < type_size.height) {
h[r] = type_size.height;
}
}
for (i = 0; i < my.columns; i += 1) {
nw += w[i];
}
for (i = 0; i < my.rows; i += 1) {
nh += h[i];
}
return {
width: insets.left + insets.right + nw + (my.columns - 1) * my.hgap,
height: insets.top + insets.bottom + nh + (my.rows - 1) * my.vgap
};
};
}
that.preferred = typeLayout('preferred');
that.minimum = typeLayout('minimum');
that.maximum = typeLayout('maximum');
that.layout = function (container) {
var i = 0, c = 0, r = 0,
pd = that.preferred(container),
sw = container.bounds().width / pd.width,
sh = container.bounds().height / pd.height,
w = zeroArray([], my.columns),
h = zeroArray([], my.rows),
insets = container.insets(),
x = insets.left,
y = insets.top,
d;
for (i = 0; i < my.items.length; i += 1) {
r = Math.floor(i / my.columns);
c = i % my.columns;
d = my.items[i].preferredSize();
d.width = sw * d.width;
d.height = sh * d.height;
if (w[c] < d.width) {
w[c] = d.width;
}
if (h[r] < d.height) {
h[r] = d.height;
}
}
for (c = 0; c < my.columns; c += 1) {
for (r = 0, y = insets.top; r < my.rows; r += 1) {
i = r * my.columns + c;
if (i < my.items.length) {
my.items[i].bounds({'x': x, 'y': y, 'width': w[c], 'height': h[r]});
my.items[i].doLayout();
}
y += h[r] + my.vgap;
}
x += w[c] + my.hgap;
}
return container;
};
return that;
};
}
}());
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