229 lines
12 KiB
JavaScript
229 lines
12 KiB
JavaScript
/*
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* jQuery.splitter.js - two-pane splitter window plugin
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*
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* version 1.51 (2009/01/09)
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*
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* Dual licensed under the MIT and GPL licenses:
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* http://www.opensource.org/licenses/mit-license.php
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* http://www.gnu.org/licenses/gpl.html
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*/
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/**
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* The splitter() plugin implements a two-pane resizable splitter window.
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* The selected elements in the jQuery object are converted to a splitter;
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* each selected element should have two child elements, used for the panes
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* of the splitter. The plugin adds a third child element for the splitbar.
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*
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* For more details see: http://methvin.com/splitter/
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*
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*
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* @example $('#MySplitter').splitter();
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* @desc Create a vertical splitter with default settings
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*
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* @example $('#MySplitter').splitter({type: 'h', accessKey: 'M'});
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* @desc Create a horizontal splitter resizable via Alt+Shift+M
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*
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* @name splitter
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* @type jQuery
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* @param Object options Options for the splitter (not required)
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* @cat Plugins/Splitter
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* @return jQuery
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* @author Dave Methvin (dave.methvin@gmail.com)
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*/
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;
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(function($) {
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$.fn.splitter = function(args) {
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args = args || {};
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return this.each(function() {
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var zombie; // left-behind splitbar for outline resizes
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function startSplitMouse(evt) {
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if (opts.outline)
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zombie = zombie || bar.clone(false).insertAfter(A);
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panes.css("-webkit-user-select", "none"); // Safari selects A/B text on a move
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bar.addClass(opts.activeClass);
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$('<div class="splitterMask"></div>').insertAfter(bar);
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A._posSplit = A[0][opts.pxSplit] - evt[opts.eventPos];
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$(document)
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.bind("mousemove", doSplitMouse)
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.bind("mouseup", endSplitMouse);
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}
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function doSplitMouse(evt) {
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var newPos = A._posSplit + evt[opts.eventPos];
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if (opts.outline) {
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newPos = Math.max(0, Math.min(newPos, splitter._DA - bar._DA));
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bar.css(opts.origin, newPos);
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} else
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resplit(newPos);
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}
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function endSplitMouse(evt) {
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$('div.splitterMask').remove();
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bar.removeClass(opts.activeClass);
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var newPos = A._posSplit + evt[opts.eventPos];
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if (opts.outline) {
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zombie.remove();
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zombie = null;
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resplit(newPos);
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}
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panes.css("-webkit-user-select", "text"); // let Safari select text again
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$(document)
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.unbind("mousemove", doSplitMouse)
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.unbind("mouseup", endSplitMouse);
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}
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function resplit(newPos) {
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// Constrain new splitbar position to fit pane size limits
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newPos = Math.max(A._min, splitter._DA - B._max,
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Math.min(newPos, A._max, splitter._DA - bar._DA - B._min));
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// Resize/position the two panes
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bar._DA = bar[0][opts.pxSplit]; // bar size may change during dock
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bar.css(opts.origin, newPos).css(opts.fixed, splitter._DF);
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A.css(opts.origin, 0).css(opts.split, newPos).css(opts.fixed, splitter._DF);
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B.css(opts.origin, newPos + bar._DA)
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.css(opts.split, splitter._DA - bar._DA - newPos).css(opts.fixed, splitter._DF);
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// IE fires resize for us; all others pay cash
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if (!$.browser.msie)
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panes.trigger("resize");
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}
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function dimSum(jq, dims) {
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// Opera returns -1 for missing min/max width, turn into 0
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var sum = 0;
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for (var i = 1; i < arguments.length; i++)
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sum += Math.max(parseInt(jq.css(arguments[i])) || 0, 0);
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return sum;
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}
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// Determine settings based on incoming opts, element classes, and defaults
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var vh = (args.splitHorizontal ? 'h' : args.splitVertical ? 'v' : args.type) || 'v';
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var opts = $.extend({
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activeClass: 'active', // class name for active splitter
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pxPerKey: 8, // splitter px moved per keypress
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tabIndex: 0, // tab order indicator
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accessKey: '' // accessKey for splitbar
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}, {
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v: { // Vertical splitters:
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keyLeft: 39, keyRight: 37, cursor: "e-resize",
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splitbarClass: "vsplitbar", outlineClass: "voutline",
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type: 'v', eventPos: "pageX", origin: "left",
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split: "width", pxSplit: "offsetWidth", side1: "Left", side2: "Right",
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fixed: "height", pxFixed: "offsetHeight", side3: "Top", side4: "Bottom"
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},
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h: { // Horizontal splitters:
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keyTop: 40, keyBottom: 38, cursor: "n-resize",
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splitbarClass: "hsplitbar", outlineClass: "houtline",
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type: 'h', eventPos: "pageY", origin: "top",
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split: "height", pxSplit: "offsetHeight", side1: "Top", side2: "Bottom",
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fixed: "width", pxFixed: "offsetWidth", side3: "Left", side4: "Right"
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}
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}[vh], args);
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// Create jQuery object closures for splitter and both panes
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var splitter = $(this).css({position: "relative"});
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var panes = $(">*", splitter[0]).css({
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position: "absolute", // positioned inside splitter container
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"z-index": "1", // splitbar is positioned above
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"-moz-outline-style": "none" // don't show dotted outline
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});
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var A = $(panes[0]); // left or top
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var B = $(panes[1]); // right or bottom
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// Focuser element, provides keyboard support; title is shown by Opera accessKeys
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var focuser = $('<a href="javascript:void(0)"></a>')
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.attr({accessKey: opts.accessKey, tabIndex: opts.tabIndex, title: opts.splitbarClass})
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.bind($.browser.opera ? "click" : "focus", function() {
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this.focus();
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bar.addClass(opts.activeClass)
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})
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.bind("keydown", function(e) {
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var key = e.which || e.keyCode;
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var dir = key == opts["key" + opts.side1] ? 1 : key == opts["key" + opts.side2] ? -1 : 0;
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if (dir)
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resplit(A[0][opts.pxSplit] + dir * opts.pxPerKey, false);
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})
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.bind("blur", function() {
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bar.removeClass(opts.activeClass)
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});
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// Splitbar element, can be already in the doc or we create one
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var bar = $(panes[2] || '<div></div>')
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.insertAfter(A).css("z-index", "100").append(focuser)
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.attr({"class": opts.splitbarClass, unselectable: "on"})
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.css({position: "absolute", "user-select": "none", "-webkit-user-select": "none",
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"-khtml-user-select": "none", "-moz-user-select": "none", "top": "0px"})
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.bind("mousedown", startSplitMouse);
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// Use our cursor unless the style specifies a non-default cursor
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if (/^(auto|default|)$/.test(bar.css("cursor")))
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bar.css("cursor", opts.cursor);
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// Cache several dimensions for speed, rather than re-querying constantly
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bar._DA = bar[0][opts.pxSplit];
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splitter._PBF = $.boxModel ? dimSum(splitter, "border" + opts.side3 + "Width", "border" + opts.side4 + "Width") : 0;
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splitter._PBA = $.boxModel ? dimSum(splitter, "border" + opts.side1 + "Width", "border" + opts.side2 + "Width") : 0;
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A._pane = opts.side1;
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B._pane = opts.side2;
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$.each([A,B], function() {
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this._min = opts["min" + this._pane] || dimSum(this, "min-" + opts.split);
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this._max = opts["max" + this._pane] || dimSum(this, "max-" + opts.split) || 9999;
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this._init = opts["size" + this._pane] === true ?
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parseInt($.curCSS(this[0], opts.split)) : opts["size" + this._pane];
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});
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// Determine initial position, get from cookie if specified
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var initPos = A._init;
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if (!isNaN(B._init)) // recalc initial B size as an offset from the top or left side
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initPos = splitter[0][opts.pxSplit] - splitter._PBA - B._init - bar._DA;
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if (opts.cookie) {
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if (!$.cookie)
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alert('jQuery.splitter(): jQuery cookie plugin required');
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var ckpos = parseInt($.cookie(opts.cookie));
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if (!isNaN(ckpos))
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initPos = ckpos;
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$(window).bind("unload", function() {
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var state = String(bar.css(opts.origin)); // current location of splitbar
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$.cookie(opts.cookie, state, {expires: opts.cookieExpires || 365,
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path: opts.cookiePath || document.location.pathname});
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});
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}
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if (isNaN(initPos)) // King Solomon's algorithm
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initPos = Math.round((splitter[0][opts.pxSplit] - splitter._PBA - bar._DA) / 2);
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// Resize event propagation and splitter sizing
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if (opts.anchorToWindow) {
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// Account for margin or border on the splitter container and enforce min height
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splitter._hadjust = dimSum(splitter, "borderTopWidth", "borderBottomWidth", "marginBottom");
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splitter._hmin = Math.max(dimSum(splitter, "minHeight"), 20);
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$(window).bind("resize",
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function() {
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var top = splitter.offset().top;
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var wh = $(window).height();
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splitter.css("height", Math.max(wh - top - splitter._hadjust, splitter._hmin) + "px");
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if (!$.browser.msie) splitter.trigger("resize");
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}).trigger("resize");
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}
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else if (opts.resizeToWidth && !$.browser.msie)
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$(window).bind("resize", function() {
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splitter.trigger("resize");
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});
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// Resize event handler; triggered immediately to set initial position
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splitter.bind("resize",
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function(e, size) {
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// Custom events bubble in jQuery 1.3; don't Yo Dawg
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if (e.target != this) return;
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// Determine new width/height of splitter container
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splitter._DF = splitter[0][opts.pxFixed] - splitter._PBF;
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splitter._DA = splitter[0][opts.pxSplit] - splitter._PBA;
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// Bail if splitter isn't visible or content isn't there yet
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if (splitter._DF <= 0 || splitter._DA <= 0) return;
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// Re-divvy the adjustable dimension; maintain size of the preferred pane
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resplit(!isNaN(size) ? size : (!(opts.sizeRight || opts.sizeBottom) ? A[0][opts.pxSplit] :
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splitter._DA - B[0][opts.pxSplit] - bar._DA));
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}).trigger("resize", [initPos]);
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});
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};
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})(jQuery);
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