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339 lines
14 KiB
JavaScript
339 lines
14 KiB
JavaScript
/*
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* jQuery.splitter.js - two-pane splitter window plugin
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*
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* version 1.6 (2010/01/03)
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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/jquery/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 $('#MySplitter').splitter({type: 'h', accessKey: 'M'});
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* @desc Create a horizontal splitter resizable via Alt+Shift+M
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*
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* @name splitter
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* @type jQuery
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* @param Object options Options for the splitter (not required)
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* @cat Plugins/Splitter
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* @return jQuery
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* @author Dave Methvin (dave.methvin@gmail.com)
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*/
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;(function($){
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var splitterCounter = 0;
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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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if ( $(this).is(".splitter") ) // already a splitter
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return;
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var zombie; // left-behind splitbar for outline resizes
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function setBarState(state) {
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bar.removeClass(opts.barStateClasses).addClass(state);
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}
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function startSplitMouse(evt) {
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if ( evt.which != 1 )
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return; // left button only
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bar.removeClass(opts.barHoverClass);
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if ( opts.outline ) {
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zombie = zombie || bar.clone(false).insertAfter(A);
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bar.removeClass(opts.barDockedClass);
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}
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setBarState(opts.barActiveClass)
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// Safari selects A/B text on a move; iframes capture mouse events so hide them
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panes.css("-webkit-user-select", "none").find("iframe").andSelf().filter("iframe").addClass(opts.iframeClass);
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A._posSplit = A[0][opts.pxSplit] - evt[opts.eventPos];
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$(document)
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.bind("mousemove"+opts.eventNamespace, doSplitMouse)
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.bind("mouseup"+opts.eventNamespace, endSplitMouse);
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}
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function doSplitMouse(evt) {
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var pos = A._posSplit+evt[opts.eventPos],
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range = Math.max(0, Math.min(pos, splitter._DA - bar._DA)),
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limit = Math.max(A._min, splitter._DA - B._max,
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Math.min(pos, A._max, splitter._DA - bar._DA - B._min));
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if ( opts.outline ) {
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// Let docking splitbar be dragged to the dock position, even if min width applies
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if ( (opts.dockPane == A && pos < Math.max(A._min, bar._DA)) ||
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(opts.dockPane == B && pos > Math.min(pos, A._max, splitter._DA - bar._DA - B._min)) ) {
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bar.addClass(opts.barDockedClass).css(opts.origin, range);
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}
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else {
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bar.removeClass(opts.barDockedClass).css(opts.origin, limit);
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}
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bar._DA = bar[0][opts.pxSplit];
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} else
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resplit(pos);
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setBarState(pos == limit? opts.barActiveClass : opts.barLimitClass);
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}
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function endSplitMouse(evt) {
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setBarState(opts.barNormalClass);
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bar.addClass(opts.barHoverClass);
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var pos = A._posSplit+evt[opts.eventPos];
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if ( opts.outline ) {
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zombie.remove(); zombie = null;
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resplit(pos);
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}
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panes.css("-webkit-user-select", "text").find("iframe").andSelf().filter("iframe").removeClass(opts.iframeClass);
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$(document)
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.unbind("mousemove"+opts.eventNamespace+" mouseup"+opts.eventNamespace);
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}
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function resplit(pos) {
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bar._DA = bar[0][opts.pxSplit]; // bar size may change during dock
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// Constrain new splitbar position to fit pane size and docking limits
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if ( (opts.dockPane == A && pos < Math.max(A._min, bar._DA)) ||
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(opts.dockPane == B && pos > Math.min(pos, A._max, splitter._DA - bar._DA - B._min)) ) {
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bar.addClass(opts.barDockedClass);
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bar._DA = bar[0][opts.pxSplit];
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pos = opts.dockPane == A? 0 : splitter._DA - bar._DA;
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if ( bar._pos == null )
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bar._pos = A[0][opts.pxSplit];
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}
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else {
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bar.removeClass(opts.barDockedClass);
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bar._DA = bar[0][opts.pxSplit];
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bar._pos = null;
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pos = Math.max(A._min, splitter._DA - B._max,
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Math.min(pos, A._max, splitter._DA - bar._DA - B._min));
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}
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// Resize/position the two panes
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bar.css(opts.origin, pos).css(opts.fixed, splitter._DF);
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A.css(opts.origin, 0).css(opts.split, pos).css(opts.fixed, splitter._DF);
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B.css(opts.origin, pos+bar._DA)
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.css(opts.split, splitter._DA-bar._DA-pos).css(opts.fixed, splitter._DF);
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panes.trigger("resize"+opts.eventNamespace);
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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]),10) || 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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// Defaults here allow easy use with ThemeRoller
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splitterClass: "splitter ui-widget ui-widget-content",
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paneClass: "splitter-pane",
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barClass: "splitter-bar",
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barNormalClass: "ui-state-default", // splitbar normal
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barHoverClass: "ui-state-hover", // splitbar mouse hover
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barActiveClass: "ui-state-highlight", // splitbar being moved
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barLimitClass: "ui-state-error", // splitbar at limit
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iframeClass: "splitter-iframe-hide", // hide iframes during split
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eventNamespace: ".splitter"+(++splitterCounter),
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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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// user can override
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v: { // Vertical splitters:
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keyLeft: 39, keyRight: 37, cursor: "e-resize",
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barStateClass: "splitter-bar-vertical",
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barDockedClass: "splitter-bar-vertical-docked"
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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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barStateClass: "splitter-bar-horizontal",
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barDockedClass: "splitter-bar-horizontal-docked"
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}
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}[vh], args, {
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// user cannot override
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v: { // Vertical splitters:
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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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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]);
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opts.barStateClasses = [opts.barNormalClass, opts.barHoverClass, opts.barActiveClass, opts.barLimitClass].join(' ');
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// Create jQuery object closures for splitter and both panes
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var splitter = $(this).css({position: "relative"}).addClass(opts.splitterClass);
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var panes = $(">*", splitter[0]).addClass(opts.paneClass).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]), B = $(panes[1]); // A = left/top, B = right/bottom
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opts.dockPane = opts.dock && (/right|bottom/.test(opts.dock)? B:A);
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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(("focus")+opts.eventNamespace,
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function(){ this.focus(); bar.addClass(opts.barActiveClass) })
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.bind("keydown"+opts.eventNamespace, 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"+opts.eventNamespace,
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function(){ bar.removeClass(opts.barActiveClass) });
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// Splitbar element
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var bar = $('<div></div>')
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.insertAfter(A).addClass(opts.barClass).addClass(opts.barStateClass)
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.append(focuser).attr({unselectable: "on"})
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.css({position: "absolute", "user-select": "none", "-webkit-user-select": "none",
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"-khtml-user-select": "none", "-moz-user-select": "none", "z-index": "100"})
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.bind("mousedown"+opts.eventNamespace, startSplitMouse)
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.bind("mouseover"+opts.eventNamespace, function(){
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$(this).addClass(opts.barHoverClass);
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})
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.bind("mouseout"+opts.eventNamespace, function(){
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$(this).removeClass(opts.barHoverClass);
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});
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// Use our cursor unless the style specifies a non-default cursor
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if ( /^(auto|default|)$/.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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// These are saved on the A/B/bar/splitter jQuery vars, which are themselves cached
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// DA=dimension adjustable direction, PBF=padding/border fixed, PBA=padding/border adjustable
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bar._DA = bar[0][opts.pxSplit];
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splitter._PBF = dimSum(splitter, "border"+opts.side3+"Width", "border"+opts.side4+"Width");
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splitter._PBA = dimSum(splitter, "border"+opts.side1+"Width", "border"+opts.side2+"Width");
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A._pane = opts.side1;
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B._pane = opts.side2;
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$.each([A,B], function(){
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this._splitter_style = this.style;
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this._min = opts["min"+this._pane] || dimSum(this, "min-"+opts.split);
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this._max = opts["max"+this._pane] || dimSum(this, "max-"+opts.split) || 9999;
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this._init = opts["size"+this._pane]===true ?
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parseInt($.curCSS(this[0],opts.split),10) : 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 ( !$.cookie )
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alert('jQuery.splitter(): jQuery cookie plugin required');
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initPos = parseInt($.cookie(opts.cookie),10);
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$(window).bind("unload"+opts.eventNamespace, function(){
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var state = String(bar.css(opts.origin)); // current location of splitbar
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$.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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opts.resizeTo = window;
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if ( opts.resizeTo ) {
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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"+opts.eventNamespace, function(){
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var top = splitter.offset().top;
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var eh = $(opts.resizeTo).height();
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splitter.css("height", Math.max(eh-top-splitter._hadjust, splitter._hmin)+"px");
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splitter.trigger("resize");
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}).trigger("resize"+opts.eventNamespace);
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}
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else if ( opts.resizeToWidth ) {
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$(window).bind("resize"+opts.eventNamespace, function(){
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splitter.trigger("resize");
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});
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}
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// Docking support
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if ( opts.dock ) {
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splitter
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.bind("toggleDock"+opts.eventNamespace, function() {
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var pw = opts.dockPane[0][opts.pxSplit];
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splitter.trigger(pw?"dock":"undock");
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})
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.bind("dock"+opts.eventNamespace, function(){
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var pw = A[0][opts.pxSplit];
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if ( !pw ) return;
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// Don't try to dock twice
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if (bar.hasClass("splitter-bar-horizontal-docked") || bar.hasClass("splitter-bar-vertical-docked"))
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return;
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bar._pos = pw;
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var x={};
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x[opts.origin] = opts.dockPane==A? 0 :
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splitter[0][opts.pxSplit] - splitter._PBA - bar[0][opts.pxSplit];
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bar.animate(x, opts.dockSpeed||1, opts.dockEasing, function(){
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bar.addClass(opts.barDockedClass);
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resplit(x[opts.origin]+1);
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});
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})
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.bind("undock"+opts.eventNamespace, function(){
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var pw = opts.dockPane[0][opts.pxSplit];
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if ( pw ) return;
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// 20px away is too close, reset to 50%
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if(bar._pos == null || Math.abs(bar._pos - splitter._DA - bar._DA) < 20) bar._pos = splitter._DA / 2;
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var x={}; x[opts.origin]=bar._pos+"px";
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bar.removeClass(opts.barDockedClass)
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.animate(x, opts.undockSpeed||opts.dockSpeed||1, opts.undockEasing||opts.dockEasing, function(){
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resplit(bar._pos);
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bar._pos = null;
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});
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});
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if ( opts.dockKey )
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$('<a title="'+opts.splitbarClass+' toggle dock" href="javascript:void(0)"></a>')
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.attr({accessKey: opts.dockKey, tabIndex: -1}).appendTo(bar)
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.bind("focus", function(){
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splitter.trigger("toggleDock"); this.blur();
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});
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bar.bind("dblclick", function(){ splitter.trigger("toggleDock"); })
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}
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// Resize event handler; triggered immediately to set initial position
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splitter
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.bind("destroy"+opts.eventNamespace, function(){
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$([window, document]).unbind(opts.eventNamespace);
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bar.unbind().remove();
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panes.removeClass(opts.paneClass);
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splitter
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.removeClass(opts.splitterClass)
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.add(panes)
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.unbind(opts.eventNamespace)
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.attr("style", function(el){
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return this._splitter_style||""; //TODO: save style
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});
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splitter = bar = focuser = panes = A = B = opts = args = null;
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})
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.bind("resize"+opts.eventNamespace, function(e, size){
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// Custom events bubble in jQuery 1.3; avoid recursion
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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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setBarState(opts.barNormalClass);
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})
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.trigger("resize" , [initPos]);
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});
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};
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})(jQuery);
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