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mobiscroll.js
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mobiscroll.js
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/*jslint eqeq: true, plusplus: true, undef: true, sloppy: true, vars: true, forin: true */
/*!
* jQuery MobiScroll v2.5.1
* http://mobiscroll.com
*
* Copyright 2010-2013, Acid Media
* Licensed under the MIT license.
*
*/
(function ($) {
function Scroller(elem, settings) {
var m,
hi,
v,
dw,
ww, // Window width
wh, // Window height
rwh,
mw, // Modal width
mh, // Modal height
anim,
debounce,
that = this,
ms = $.mobiscroll,
e = elem,
elm = $(e),
theme,
lang,
s = extend({}, defaults),
pres = {},
warr = [],
iv = {},
pixels = {},
input = elm.is('input'),
visible = false;
// Private functions
function isReadOnly(wh) {
if ($.isArray(s.readonly)) {
var i = $('.dwwl', dw).index(wh);
return s.readonly[i];
}
return s.readonly;
}
function generateWheelItems(i) {
var html = '<div class="dw-bf">',
l = 1,
j;
for (j in warr[i]) {
if (l % 20 == 0) {
html += '</div><div class="dw-bf">';
}
html += '<div class="dw-li dw-v" data-val="' + j + '" style="height:' + hi + 'px;line-height:' + hi + 'px;"><div class="dw-i">' + warr[i][j] + '</div></div>';
l++;
}
html += '</div>';
return html;
}
function setGlobals(t) {
min = $('.dw-li', t).index($('.dw-v', t).eq(0));
max = $('.dw-li', t).index($('.dw-v', t).eq(-1));
index = $('.dw-ul', dw).index(t);
h = hi;
inst = that;
}
function formatHeader(v) {
var t = s.headerText;
return t ? (typeof t === 'function' ? t.call(e, v) : t.replace(/\{value\}/i, v)) : '';
}
function read() {
that.temp = ((input && that.val !== null && that.val != elm.val()) || that.values === null) ? s.parseValue(elm.val() || '', that) : that.values.slice(0);
that.setValue(true);
}
function scrollToPos(time, index, manual, dir, orig) {
// Call validation event
if (event('validate', [dw, index, time]) !== false) {
// Set scrollers to position
$('.dw-ul', dw).each(function (i) {
var t = $(this),
cell = $('.dw-li[data-val="' + that.temp[i] + '"]', t),
cells = $('.dw-li', t),
v = cells.index(cell),
l = cells.length,
sc = i == index || index === undefined;
// Scroll to a valid cell
if (!cell.hasClass('dw-v')) {
var cell1 = cell,
cell2 = cell,
dist1 = 0,
dist2 = 0;
while (v - dist1 >= 0 && !cell1.hasClass('dw-v')) {
dist1++;
cell1 = cells.eq(v - dist1);
}
while (v + dist2 < l && !cell2.hasClass('dw-v')) {
dist2++;
cell2 = cells.eq(v + dist2);
}
// If we have direction (+/- or mouse wheel), the distance does not count
if (((dist2 < dist1 && dist2 && dir !== 2) || !dist1 || (v - dist1 < 0) || dir == 1) && cell2.hasClass('dw-v')) {
cell = cell2;
v = v + dist2;
} else {
cell = cell1;
v = v - dist1;
}
}
if (!(cell.hasClass('dw-sel')) || sc) {
// Set valid value
that.temp[i] = cell.attr('data-val');
// Add selected class to cell
$('.dw-sel', t).removeClass('dw-sel');
cell.addClass('dw-sel');
// Scroll to position
//that.scroll(t, i, v, time);
that.scroll(t, i, v, sc ? time : 0.1, sc ? orig : undefined);
}
});
// Reformat value if validation changed something
that.change(manual);
}
}
function position(check) {
if (s.display == 'inline' || (ww === $(window).width() && rwh === $(window).height() && check)) {
return;
}
var w,
l,
t,
aw, // anchor width
ah, // anchor height
ap, // anchor position
at, // anchor top
al, // anchor left
arr, // arrow
arrw, // arrow width
arrl, // arrow left
scroll,
totalw = 0,
minw = 0,
st = $(window).scrollTop(),
wr = $('.dwwr', dw),
d = $('.dw', dw),
css = {},
anchor = s.anchor === undefined ? elm : s.anchor;
ww = $(window).width();
rwh = $(window).height();
wh = window.innerHeight; // on iOS we need innerHeight
wh = wh || rwh;
if (/modal|bubble/.test(s.display)) {
$('.dwc', dw).each(function () {
w = $(this).width(true);
totalw += w;
minw = (w > minw) ? w : minw;
});
w = totalw > ww ? minw : totalw;
//wr.width(w);
}
mw = d.width();
mh = d.height(true);
if (s.display == 'modal') {
l = (ww - mw) / 2;
t = st + (wh - mh) / 2;
} else if (s.display == 'bubble') {
scroll = true;
arr = $('.dw-arrw-i', dw);
ap = anchor.offset();
at = ap.top;
al = ap.left;
// horizontal positioning
aw = anchor.width();
ah = anchor.height();
l = al - (d.width(true) - aw) / 2;
l = l > (ww - mw) ? (ww - (mw + 20)) : l;
l = l >= 0 ? l : 20;
// vertical positioning
t = at - mh; //(mh + 3); // above the input
if ((t < st) || (at > st + wh)) { // if doesn't fit above or the input is out of the screen
d.removeClass('dw-bubble-top').addClass('dw-bubble-bottom');
t = at + ah;// + 3; // below the input
} else {
d.removeClass('dw-bubble-bottom').addClass('dw-bubble-top');
}
//t = t >= st ? t : st;
// Calculate Arrow position
arrw = arr.width();
arrl = al + aw / 2 - (l + (mw - arrw) / 2);
// Limit Arrow position to [0, pocw.width] intervall
$('.dw-arr', dw).css({ left: arrl > arrw ? arrw : arrl });
} else {
css.width = '100%';
if (s.display == 'top') {
t = st;
} else if (s.display == 'bottom') {
t = st + wh - mh;
}
}
css.top = t < 0 ? 0 : t;
css.left = l;
d.css(css);
// If top + modal height > doc height, increase doc height
$('.dw-persp', dw).height(0).height(t + mh > $(document).height() ? t + mh : $(document).height());
// Scroll needed
if (scroll && ((t + mh > st + wh) || (at > st + wh))) {
$(window).scrollTop(t + mh - wh);
}
}
function testTouch(e) {
if (e.type === 'touchstart') {
touch = true;
setTimeout(function () {
touch = false; // Reset if mouse event was not fired
}, 500);
} else if (touch) {
touch = false;
return false;
}
return true;
}
function event(name, args) {
var ret;
args.push(that);
$.each([theme.defaults, pres, settings], function (i, v) {
if (v[name]) { // Call preset event
ret = v[name].apply(e, args);
}
});
return ret;
}
function plus(t) {
var p = +t.data('pos'),
val = p + 1;
calc(t, val > max ? min : val, 1, true);
}
function minus(t) {
var p = +t.data('pos'),
val = p - 1;
calc(t, val < min ? max : val, 2, true);
}
// Public functions
/**
* Enables the scroller and the associated input.
*/
that.enable = function () {
s.disabled = false;
if (input) {
elm.prop('disabled', false);
}
};
/**
* Disables the scroller and the associated input.
*/
that.disable = function () {
s.disabled = true;
if (input) {
elm.prop('disabled', true);
}
};
/**
* Scrolls target to the specified position
* @param {Object} t - Target wheel jQuery object.
* @param {Number} index - Index of the changed wheel.
* @param {Number} val - Value.
* @param {Number} time - Duration of the animation, optional.
* @param {Number} orig - Original value.
*/
that.scroll = function (t, index, val, time, orig) {
function getVal(t, b, c, d) {
return c * Math.sin(t / d * (Math.PI / 2)) + b;
}
function ready() {
clearInterval(iv[index]);
delete iv[index];
t.data('pos', val).closest('.dwwl').removeClass('dwa');
}
var px = (m - val) * hi,
i;
if (px == pixels[index] && iv[index]) {
return;
}
if (time && px != pixels[index]) {
// Trigger animation start event
event('onAnimStart', [dw, index, time]);
}
pixels[index] = px;
t.attr('style', (prefix + '-transition:all ' + (time ? time.toFixed(3) : 0) + 's ease-out;') + (has3d ? (prefix + '-transform:translate3d(0,' + px + 'px,0);') : ('top:' + px + 'px;')));
if (iv[index]) {
ready();
}
if (time && orig !== undefined) {
i = 0;
t.closest('.dwwl').addClass('dwa');
iv[index] = setInterval(function () {
i += 0.1;
t.data('pos', Math.round(getVal(i, orig, val - orig, time)));
if (i >= time) {
ready();
}
}, 100);
} else {
t.data('pos', val);
}
};
/**
* Gets the selected wheel values, formats it, and set the value of the scroller instance.
* If input parameter is true, populates the associated input element.
* @param {Boolean} sc - Scroll the wheel in position.
* @param {Boolean} fill - Also set the value of the associated input element. Default is true.
* @param {Number} time - Animation time
* @param {Boolean} temp - If true, then only set the temporary value.(only scroll there but not set the value)
*/
that.setValue = function (sc, fill, time, temp) {
if (!$.isArray(that.temp)) {
that.temp = s.parseValue(that.temp + '', that);
}
if (visible && sc) {
scrollToPos(time);
}
v = s.formatResult(that.temp);
if (!temp) {
that.values = that.temp.slice(0);
that.val = v;
}
if (fill) {
if (input) {
elm.val(v).trigger('change');
}
}
};
that.getValues = function () {
var ret = [],
i;
for (i in that._selectedValues) {
ret.push(that._selectedValues[i]);
}
return ret;
};
/**
* Checks if the current selected values are valid together.
* In case of date presets it checks the number of days in a month.
* @param {Number} time - Animation time
* @param {Number} orig - Original value
* @param {Number} i - Currently changed wheel index, -1 if initial validation.
* @param {Number} dir - Scroll direction
*/
that.validate = function (i, dir, time, orig) {
scrollToPos(time, i, true, dir, orig);
};
/**
*
*/
that.change = function (manual) {
v = s.formatResult(that.temp);
if (s.display == 'inline') {
that.setValue(false, manual);
} else {
$('.dwv', dw).html(formatHeader(v));
var dayCur=$('.dwv', dw).html();
var dayCurYes=new Date(Date.parse(dayCur.replace(/-/g, '/')));
var weekAll=new Array('星期日','星期一','星期二','星期三','星期四','星期五','星期六');
var todayWeek=weekAll[dayCurYes.getDay()];
$('.dwv', dw).html(dayCur +'<span class="todayWeek" style="margin-left:20px;">'+todayWeek+'</span>');
}
if (manual) {
event('onChange', [v]);
}
};
/**
* Changes the values of a wheel, and scrolls to the correct position
*/
that.changeWheel = function (idx, time) {
if (dw) {
var i = 0,
j,
k,
nr = idx.length;
for (j in s.wheels) {
for (k in s.wheels[j]) {
if ($.inArray(i, idx) > -1) {
warr[i] = s.wheels[j][k];
$('.dw-ul', dw).eq(i).html(generateWheelItems(i));
nr--;
if (!nr) {
position();
scrollToPos(time, undefined, true);
return;
}
}
i++;
}
}
}
};
/**
* Return true if the scroller is currently visible.
*/
that.isVisible = function () {
return visible;
};
/**
*
*/
that.tap = function (el, handler) {
var startX,
startY;
if (s.tap) {
el.bind('touchstart', function (e) {
e.preventDefault();
startX = getCoord(e, 'X');
startY = getCoord(e, 'Y');
}).bind('touchend', function (e) {
// If movement is less than 20px, fire the click event handler
if (Math.abs(getCoord(e, 'X') - startX) < 20 && Math.abs(getCoord(e, 'Y') - startY) < 20) {
handler.call(this, e);
}
tap = true;
setTimeout(function () {
tap = false;
}, 300);
});
}
el.bind('click', function (e) {
if (!tap) {
// If handler was not called on touchend, call it on click;
handler.call(this, e);
}
});
};
/**
* Shows the scroller instance.
* @param {Boolean} prevAnim - Prevent animation if true
*/
that.show = function (prevAnim) {
if (s.disabled || visible) {
return false;
}
if (s.display == 'top') {
anim = 'slidedown';
}
if (s.display == 'bottom') {
anim = 'slideup';
}
// Parse value from input
read();
event('onBeforeShow', [dw]);
// Create wheels
var l = 0,
i,
label,
mAnim = '';
if (anim && !prevAnim) {
mAnim = 'dw-' + anim + ' dw-in';
}
// Create wheels containers
var html = '<div class="dw-trans ' + s.theme + ' dw-' + s.display + '">' + (s.display == 'inline' ? '<div class="dw dwbg dwi"><div class="dwwr" style="width:100%;">' : '<div class="dw-persp">' + '<div class="dwo"></div><div class="dw dwbg ' + mAnim + '"><div class="dw-arrw"><div class="dw-arrw-i"><div class="dw-arr"></div></div></div><div class="dwwr">' + (s.headerText ? '<div class="dwt">'+(s.title?s.title:'选择日期')+'</div><div class="dwv"></div>' : ''));
for (i = 0; i < s.wheels.length; i++) {
html += '<div class="dwc' + (s.mode != 'scroller' ? ' dwpm' : ' dwsc') + (s.showLabel ? '' : ' dwhl') + '"><div class="dwwc dwrc"><table cellpadding="0" cellspacing="0"><tr>';
// Create wheels
for (label in s.wheels[i]) {
warr[l] = s.wheels[i][label];
html += '<td><div class="dwwl dwrc dwwl' + l + '">' + (s.mode != 'scroller' ? '<div class="dwwb dwwbp" style="height:' + hi + 'px;line-height:' + hi + 'px;"><span>+</span></div><div class="dwwb dwwbm" style="height:' + hi + 'px;line-height:' + hi + 'px;"><span>–</span></div>' : '') + '<div class="dwl">' + label + '</div><div class="dww" style="height:' + (s.rows * hi) + 'px;min-width:' + s.width + 'px;"><div class="dw-ul">';
// Create wheel values
html += generateWheelItems(l);
html += '</div><div class="dwwo"></div></div><div class="dwwol"></div></div></td>';
l++;
}
html += '</tr></table></div></div>';
}
html += (s.display != 'inline' ? '<div class="dwbc' + (s.button3 ? ' dwbc-p' : '') + '"><span class="dwbw dwb-s"><span class="dwb">' + s.setText + '</span></span>' + (s.button3 ? '<span class="dwbw dwb-n"><span class="dwb">' + s.button3Text + '</span></span>' : '') + '<span class="dwbw dwb-c"><span class="dwb">' + s.cancelText + '</span></span></div></div>' : '<div class="dwcc"></div>') + '</div></div></div>';
dw = $(html);
scrollToPos();
event('onMarkupReady', [dw]);
// Show
if (s.display != 'inline') {
dw.appendTo('body');
// Remove animation class
setTimeout(function () {
dw.removeClass('dw-trans').find('.dw').removeClass(mAnim);
}, 350);
} else if (elm.is('div')) {
elm.html(dw);
} else {
dw.insertAfter(elm);
}
event('onMarkupInserted', [dw]);
visible = true;
// Theme init
theme.init(dw, that);
if (s.display != 'inline') {
// Init buttons
that.tap($('.dwb-s span', dw), function () {
if (that.hide(false, 'set') !== false) {
that.setValue(false, true);
event('onSelect', [that.val]);
}
});
that.tap($('.dwb-c span', dw), function () {
that.cancel();
});
if (s.button3) {
that.tap($('.dwb-n span', dw), s.button3);
}
// prevent scrolling if not specified otherwise
if (s.scrollLock) {
dw.bind('touchmove', function (e) {
if (mh <= wh && mw <= ww) {
e.preventDefault();
}
});
}
// Disable inputs to prevent bleed through (Android bug)
$('input,select,button').each(function () {
if (!$(this).prop('disabled')) {
$(this).addClass('dwtd').prop('disabled', true);
}
});
// Set position
position();
$(window).bind('resize.dw', function () {
// Sometimes scrollTop is not correctly set, so we wait a little
clearTimeout(debounce);
debounce = setTimeout(function () {
position(true);
}, 100);
});
}
// Events
dw.delegate('.dwwl', 'DOMMouseScroll mousewheel', function (e) {
if (!isReadOnly(this)) {
e.preventDefault();
e = e.originalEvent;
var delta = e.wheelDelta ? (e.wheelDelta / 120) : (e.detail ? (-e.detail / 3) : 0),
t = $('.dw-ul', this),
p = +t.data('pos'),
val = Math.round(p - delta);
setGlobals(t);
calc(t, val, delta < 0 ? 1 : 2);
}
}).delegate('.dwb, .dwwb', START_EVENT, function (e) {
// Active button
$(this).addClass('dwb-a');
}).delegate('.dwwb', START_EVENT, function (e) {
e.stopPropagation();
e.preventDefault();
var w = $(this).closest('.dwwl');
if (testTouch(e) && !isReadOnly(w) && !w.hasClass('dwa')) {
click = true;
// + Button
var t = w.find('.dw-ul'),
func = $(this).hasClass('dwwbp') ? plus : minus;
setGlobals(t);
clearInterval(timer);
timer = setInterval(function () { func(t); }, s.delay);
func(t);
}
}).delegate('.dwwl', START_EVENT, function (e) {
// Prevent scroll
e.preventDefault();
// Scroll start
if (testTouch(e) && !move && !isReadOnly(this) && !click) {
move = true;
$(document).bind(MOVE_EVENT, onMove);
target = $('.dw-ul', this);
scrollable = s.mode != 'clickpick';
pos = +target.data('pos');
setGlobals(target);
moved = iv[index] !== undefined; // Don't allow tap, if still moving
start = getCoord(e, 'Y');
startTime = new Date();
stop = start;
that.scroll(target, index, pos, 0.001);
if (scrollable) {
target.closest('.dwwl').addClass('dwa');
}
}
});
event('onShow', [dw, v]);
};
/**
* Hides the scroller instance.
*/
that.hide = function (prevAnim, btn) {
// If onClose handler returns false, prevent hide
if (!visible || event('onClose', [v, btn]) === false) {
return false;
}
// Re-enable temporary disabled fields
$('.dwtd').prop('disabled', false).removeClass('dwtd');
elm.blur();
// Hide wheels and overlay
if (dw) {
if (s.display != 'inline' && anim && !prevAnim) {
dw.addClass('dw-trans').find('.dw').addClass('dw-' + anim + ' dw-out');
setTimeout(function () {
dw.remove();
dw = null;
}, 350);
} else {
dw.remove();
dw = null;
}
visible = false;
pixels = {};
// Stop positioning on window resize
$(window).unbind('.dw');
}
};
/**
* Cancel and hide the scroller instance.
*/
that.cancel = function () {
if (that.hide(false, 'cancel') !== false) {
event('onCancel', [that.val]);
}
};
/**
* Scroller initialization.
*/
that.init = function (ss) {
// Get theme defaults
theme = extend({ defaults: {}, init: empty }, ms.themes[ss.theme || s.theme]);
// Get language defaults
lang = ms.i18n[ss.lang || s.lang];
extend(settings, ss); // Update original user settings
extend(s, theme.defaults, lang, settings);
that.settings = s;
// Unbind all events (if re-init)
elm.unbind('.dw');
var preset = ms.presets[s.preset];
if (preset) {
pres = preset.call(e, that);
extend(s, pres, settings); // Load preset settings
extend(methods, pres.methods); // Extend core methods
}
// Set private members
m = Math.floor(s.rows / 2);
hi = s.height;
anim = s.animate;
if (elm.data('dwro') !== undefined) {
e.readOnly = bool(elm.data('dwro'));
}
if (visible) {
that.hide();
}
if (s.display == 'inline') {
that.show();
} else {
read();
if (input && s.showOnFocus) {
// Set element readonly, save original state
elm.data('dwro', e.readOnly);
e.readOnly = true;
// Init show datewheel
elm.bind('focus.dw', function () { that.show(); });
}
}
};
that.trigger = function (name, params) {
return event(name, params);
};
that.values = null;
that.val = null;
that.temp = null;
that._selectedValues = {}; // [];
that.init(settings);
}
function testProps(props) {
var i;
for (i in props) {
if (mod[props[i]] !== undefined) {
return true;
}
}
return false;
}
function testPrefix() {
var prefixes = ['Webkit', 'Moz', 'O', 'ms'],
p;
for (p in prefixes) {
if (testProps([prefixes[p] + 'Transform'])) {
return '-' + prefixes[p].toLowerCase();
}
}
return '';
}
function getInst(e) {
return scrollers[e.id];
}
function getCoord(e, c) {
var org = e.originalEvent,
ct = e.changedTouches;
return ct || (org && org.changedTouches) ? (org ? org.changedTouches[0]['page' + c] : ct[0]['page' + c]) : e['page' + c];
}
function bool(v) {
return (v === true || v == 'true');
}
function constrain(val, min, max) {
val = val > max ? max : val;
val = val < min ? min : val;
return val;
}
function calc(t, val, dir, anim, orig) {
val = constrain(val, min, max);
var cell = $('.dw-li', t).eq(val),
o = orig === undefined ? val : orig,
idx = index,
time = anim ? (val == o ? 0.1 : Math.abs((val - o) * 0.1)) : 0;
// Set selected scroller value
inst.temp[idx] = cell.attr('data-val');
inst.scroll(t, idx, val, time, orig);
setTimeout(function () {
// Validate
inst.validate(idx, dir, time, orig);
}, 10);
}
function init(that, method, args) {
if (methods[method]) {
return methods[method].apply(that, Array.prototype.slice.call(args, 1));
}
if (typeof method === 'object') {
return methods.init.call(that, method);
}
return that;
}
var scrollers = {},
timer,
empty = function () { },
h,
min,
max,
inst, // Current instance
date = new Date(),
uuid = date.getTime(),
move,
click,
target,
index,
start,
stop,
startTime,
pos,
moved,
scrollable,
mod = document.createElement('modernizr').style,
has3d = testProps(['perspectiveProperty', 'WebkitPerspective', 'MozPerspective', 'OPerspective', 'msPerspective']),
prefix = testPrefix(),
extend = $.extend,
tap,
touch,
START_EVENT = 'touchstart mousedown',
MOVE_EVENT = 'touchmove mousemove',
END_EVENT = 'touchend mouseup',
onMove = function (e) {
if (scrollable) {
e.preventDefault();
stop = getCoord(e, 'Y');
inst.scroll(target, index, constrain(pos + (start - stop) / h, min - 1, max + 1));
}
moved = true;
},
defaults = {
// Options
width: 70,
height: 40,
rows: 3,
delay: 300,
disabled: false,
readonly: false,
showOnFocus: true,
showLabel: true,
wheels: [],
theme: '',
headerText: '{value}',
display: 'modal',
mode: 'scroller',
preset: '',
lang: 'en-US',
setText: 'Set',
cancelText: 'Cancel',
scrollLock: true,
tap: true,
formatResult: function (d) {
return d.join(' ');
},
parseValue: function (value, inst) {
var w = inst.settings.wheels,
val = value.split(' '),
ret = [],
j = 0,
i,
l,
v;
for (i = 0; i < w.length; i++) {
for (l in w[i]) {
if (w[i][l][val[j]] !== undefined) {
ret.push(val[j]);
} else {
for (v in w[i][l]) { // Select first value from wheel
ret.push(v);
break;
}
}
j++;
}
}
return ret;
}
},
methods = {
init: function (options) {
if (options === undefined) {
options = {};
}
return this.each(function () {
if (!this.id) {
uuid += 1;
this.id = 'scoller' + uuid;
}
scrollers[this.id] = new Scroller(this, options);
});
},
enable: function () {
return this.each(function () {
var inst = getInst(this);
if (inst) {
inst.enable();
}
});
},
disable: function () {
return this.each(function () {
var inst = getInst(this);
if (inst) {
inst.disable();
}
});
},
isDisabled: function () {
var inst = getInst(this[0]);
if (inst) {
return inst.settings.disabled;
}
},
isVisible: function () {
var inst = getInst(this[0]);
if (inst) {
return inst.isVisible();
}
},
option: function (option, value) {
return this.each(function () {
var inst = getInst(this);
if (inst) {
var obj = {};
if (typeof option === 'object') {
obj = option;
} else {
obj[option] = value;
}
inst.init(obj);
}
});
},
setValue: function (d, fill, time, temp) {
return this.each(function () {
var inst = getInst(this);
if (inst) {
inst.temp = d;
inst.setValue(true, fill, time, temp);
}
});
},