splitter.js
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/*
* jQuery.splitter.js - two-pane splitter window plugin
*
* version 1.51 (2009/01/09)
*
* Dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
*/
/**
* The splitter() plugin implements a two-pane resizable splitter window.
* The selected elements in the jQuery object are converted to a splitter;
* each selected element should have two child elements, used for the panes
* of the splitter. The plugin adds a third child element for the splitbar.
*
* For more details see: http://methvin.com/splitter/
*
*
* @example $('#MySplitter').splitter();
* @desc Create a vertical splitter with default settings
*
* @example $('#MySplitter').splitter({type: 'h', accessKey: 'M'});
* @desc Create a horizontal splitter resizable via Alt+Shift+M
*
* @name splitter
* @type jQuery
* @param Object options Options for the splitter (not required)
* @cat Plugins/Splitter
* @return jQuery
* @author Dave Methvin (dave.methvin@gmail.com)
*/
;
(function ($) {
$.fn.splitter = function (args) {
args = args || {};
return this.each(function () {
var zombie; // left-behind splitbar for outline resizes
function startSplitMouse(evt) {
if (opts.outline)
zombie = zombie || bar.clone(false).insertAfter(A);
panes.css("-webkit-user-select", "none"); // Safari selects A/B text on a move
bar.addClass(opts.activeClass);
A._posSplit = A[0][opts.pxSplit] - evt[opts.eventPos];
$(document)
.bind("mousemove", doSplitMouse)
.bind("mouseup", endSplitMouse);
}
function doSplitMouse(evt) {
var newPos = A._posSplit + evt[opts.eventPos];
if (opts.outline) {
newPos = Math.max(0, Math.min(newPos, splitter._DA - bar._DA));
bar.css(opts.origin, newPos);
} else
resplit(newPos);
}
function endSplitMouse(evt) {
bar.removeClass(opts.activeClass);
var newPos = A._posSplit + evt[opts.eventPos];
if (opts.outline) {
zombie.remove();
zombie = null;
resplit(newPos);
}
panes.css("-webkit-user-select", "text"); // let Safari select text again
$(document)
.unbind("mousemove", doSplitMouse)
.unbind("mouseup", endSplitMouse);
}
function resplit(newPos) {
// Constrain new splitbar position to fit pane size limits
newPos = Math.max(A._min, splitter._DA - B._max,
Math.min(newPos, A._max, splitter._DA - bar._DA - B._min));
// Resize/position the two panes
bar._DA = bar[0][opts.pxSplit]; // bar size may change during dock
bar.css(opts.origin, newPos).css(opts.fixed, splitter._DF);
A.css(opts.origin, 0).css(opts.split, newPos).css(opts.fixed, splitter._DF);
B.css(opts.origin, newPos + bar._DA)
.css(opts.split, splitter._DA - bar._DA - newPos).css(opts.fixed, splitter._DF);
// IE fires resize for us; all others pay cash
//if (!$.browser.msie)
panes.trigger("resize");
}
function dimSum(jq, dims) {
// Opera returns -1 for missing min/max width, turn into 0
var sum = 0;
for (var i = 1; i < arguments.length; i++)
sum += Math.max(parseInt(jq.css(arguments[i])) || 0, 0);
return sum;
}
// Determine settings based on incoming opts, element classes, and defaults
var vh = (args.splitHorizontal ? 'h' : args.splitVertical ? 'v' : args.type) || 'v';
var opts = $.extend({
activeClass: 'active', // class name for active splitter
pxPerKey: 8, // splitter px moved per keypress
tabIndex: 0, // tab order indicator
accessKey: '' // accessKey for splitbar
}, {
v: { // Vertical splitters:
keyLeft: 39, keyRight: 37, cursor: "e-resize",
splitbarClass: "vsplitbar", outlineClass: "voutline",
type: 'v', eventPos: "pageX", origin: "left",
split: "width", pxSplit: "offsetWidth", side1: "Left", side2: "Right",
fixed: "height", pxFixed: "offsetHeight", side3: "Top", side4: "Bottom"
},
h: { // Horizontal splitters:
keyTop: 40, keyBottom: 38, cursor: "n-resize",
splitbarClass: "hsplitbar", outlineClass: "houtline",
type: 'h', eventPos: "pageY", origin: "top",
split: "height", pxSplit: "offsetHeight", side1: "Top", side2: "Bottom",
fixed: "width", pxFixed: "offsetWidth", side3: "Left", side4: "Right"
}
}[vh], args);
// Create jQuery object closures for splitter and both panes
var splitter = $(this).css({position: "relative"});
var panes = $(">*", splitter[0]).css({
position: "absolute", // positioned inside splitter container
"z-index": "1", // splitbar is positioned above
"-moz-outline-style": "none" // don't show dotted outline
});
var A = $(panes[0]); // left or top
var B = $(panes[1]); // right or bottom
// Focuser element, provides keyboard support; title is shown by Opera accessKeys
var focuser = $('<a href="javascript:void(0)"></a>')
.attr({accessKey: opts.accessKey, tabIndex: opts.tabIndex, title: opts.splitbarClass})
.bind("focus", function () { // opera: click
this.focus();
bar.addClass(opts.activeClass)
})
.bind("keydown", function (e) {
var key = e.which || e.keyCode;
var dir = key == opts["key" + opts.side1] ? 1 : key == opts["key" + opts.side2] ? -1 : 0;
if (dir)
resplit(A[0][opts.pxSplit] + dir * opts.pxPerKey, false);
})
.bind("blur", function () {
bar.removeClass(opts.activeClass)
});
// Splitbar element, can be already in the doc or we create one
var bar = $(panes[2] || '<div></div>')
.insertAfter(A).css("z-index", "50").append(focuser)
.attr({"class": opts.splitbarClass, unselectable: "on"})
.css({position: "absolute", "user-select": "none", "-webkit-user-select": "none",
"-khtml-user-select": "none", "-moz-user-select": "none"})
.bind("mousedown", startSplitMouse);
// Use our cursor unless the style specifies a non-default cursor
if (/^(auto|default|)$/.test(bar.css("cursor")))
bar.css("cursor", opts.cursor);
// Cache several dimensions for speed, rather than re-querying constantly
bar._DA = bar[0][opts.pxSplit];
splitter._PBF = $.boxModel ? dimSum(splitter, "border" + opts.side3 + "Width", "border" + opts.side4 + "Width") : 0;
splitter._PBA = $.boxModel ? dimSum(splitter, "border" + opts.side1 + "Width", "border" + opts.side2 + "Width") : 0;
A._pane = opts.side1;
B._pane = opts.side2;
$.each([A, B], function () {
this._min = opts["min" + this._pane] || dimSum(this, "min-" + opts.split);
this._max = opts["max" + this._pane] || dimSum(this, "max-" + opts.split) || 9999;
this._init = opts["size" + this._pane] === true ?
parseInt($.curCSS(this[0], opts.split)) : opts["size" + this._pane];
});
// Determine initial position, get from cookie if specified
var initPos = A._init;
if (!isNaN(B._init)) // recalc initial B size as an offset from the top or left side
initPos = splitter[0][opts.pxSplit] - splitter._PBA - B._init - bar._DA;
if (opts.cookie) {
if (!$.cookie)
alert('jQuery.splitter(): jQuery cookie plugin required');
var ckpos = parseInt($.cookie(opts.cookie));
if (!isNaN(ckpos))
initPos = ckpos;
$(window).bind("unload", function () {
var state = String(bar.css(opts.origin)); // current location of splitbar
$.cookie(opts.cookie, state, {expires: opts.cookieExpires || 365,
path: opts.cookiePath || document.location.pathname});
});
}
if (isNaN(initPos)) // King Solomon's algorithm
initPos = Math.round((splitter[0][opts.pxSplit] - splitter._PBA - bar._DA) / 2);
var resizeHandler = function () {
var top = splitter.offset().top;
var wh = $(window).height();
splitter.css("height", Math.max(wh - top - splitter._hadjust, splitter._hmin) + "px");
//if (!$.browser.msie)
splitter.trigger("resize");
};
// Resize event propagation and splitter sizing
if (opts.anchorToWindow) {
// Account for margin or border on the splitter container and enforce min height
splitter._hadjust = dimSum(splitter, "borderTopWidth", "borderBottomWidth", "marginBottom");
splitter._hmin = Math.max(dimSum(splitter, "minHeight"), 20);
$(window).bind("resize", resizeHandler);
resizeHandler();
}
else if (opts.resizeToWidth) // && !$.browser.msie)
$(window).bind("resize", function () {
splitter.trigger("resize");
});
// Resize event handler; triggered immediately to set initial position
splitter.bind("resize",function (e, size) {
// Determine new width/height of splitter container
splitter._DF = splitter[0][opts.pxFixed] - splitter._PBF;
splitter._DA = splitter[0][opts.pxSplit] - splitter._PBA;
// Bail if splitter isn't visible or content isn't there yet
if (splitter._DF <= 0 || splitter._DA <= 0) return;
// Re-divvy the adjustable dimension; maintain size of the preferred pane
resplit(!isNaN(size) ? size : (!(opts.sizeRight || opts.sizeBottom) ? A[0][opts.pxSplit] :
splitter._DA - B[0][opts.pxSplit] - bar._DA));
e.stopPropagation();
}).trigger("resize", [initPos]);
});
};
})(jQuery);