+++ /dev/null
-/*
-html5slider - a JS implementation of <input type=range> for Firefox 4 and up
-https://github.com/fryn/html5slider
-
-Copyright (c) 2010-2011 Frank Yan, <http://frankyan.com>
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
-*/
-
-(function() {
-
-// test for native support
-var test = document.createElement('input');
-try {
- test.type = 'range';
- if (test.type == 'range')
- return;
-} catch (e) {
- return;
-}
-
-// test for required property support
-if (!document.mozSetImageElement || !('MozAppearance' in test.style))
- return;
-
-var scale;
-var isMac = navigator.platform == 'MacIntel';
-var thumb = {
- radius: isMac ? 9 : 6,
- width: isMac ? 22 : 12,
- height: isMac ? 16 : 20
-};
-var track = '-moz-linear-gradient(top, transparent ' + (isMac ?
- '6px, #999 6px, #999 7px, #ccc 9px, #bbb 11px, #bbb 12px, transparent 12px' :
- '9px, #999 9px, #bbb 10px, #fff 11px, transparent 11px') +
- ', transparent)';
-var styles = {
- 'min-width': thumb.width + 'px',
- 'min-height': thumb.height + 'px',
- 'max-height': thumb.height + 'px',
- padding: 0,
- border: 0,
- 'border-radius': 0,
- cursor: 'default',
- 'text-indent': '-999999px' // -moz-user-select: none; breaks mouse capture
-};
-var onChange = document.createEvent('HTMLEvents');
-onChange.initEvent('change', true, false);
-
-if (document.readyState == 'loading')
- document.addEventListener('DOMContentLoaded', initialize, true);
-else
- initialize();
-
-function initialize() {
- // create initial sliders
- Array.forEach(document.querySelectorAll('input[type=range]'), transform);
- // create sliders on-the-fly
- document.addEventListener('DOMNodeInserted', onNodeInserted, true);
-}
-
-function onNodeInserted(e) {
- check(e.target);
- if (e.target.querySelectorAll)
- Array.forEach(e.target.querySelectorAll('input'), check);
-}
-
-function check(input, async) {
- if (input.localName != 'input' || input.type == 'range');
- else if (input.getAttribute('type') == 'range')
- transform(input);
- else if (!async)
- setTimeout(check, 0, input, true);
-}
-
-function transform(slider) {
-
- var isValueSet, areAttrsSet, isChanged, isClick, prevValue, rawValue, prevX;
- var min, max, step, range, value = slider.value;
-
- // lazily create shared slider affordance
- if (!scale) {
- scale = document.body.appendChild(document.createElement('hr'));
- style(scale, {
- '-moz-appearance': isMac ? 'scale-horizontal' : 'scalethumb-horizontal',
- display: 'block',
- visibility: 'visible',
- opacity: 1,
- position: 'fixed',
- top: '-999999px'
- });
- document.mozSetImageElement('__sliderthumb__', scale);
- }
-
- // reimplement value and type properties
- var getValue = function() { return '' + value; };
- var setValue = function setValue(val) {
- value = '' + val;
- isValueSet = true;
- draw();
- delete slider.value;
- slider.value = value;
- slider.__defineGetter__('value', getValue);
- slider.__defineSetter__('value', setValue);
- };
- slider.__defineGetter__('value', getValue);
- slider.__defineSetter__('value', setValue);
- slider.__defineGetter__('type', function() { return 'range'; });
-
- // sync properties with attributes
- ['min', 'max', 'step'].forEach(function(prop) {
- if (slider.hasAttribute(prop))
- areAttrsSet = true;
- slider.__defineGetter__(prop, function() {
- return this.hasAttribute(prop) ? this.getAttribute(prop) : '';
- });
- slider.__defineSetter__(prop, function(val) {
- val === null ? this.removeAttribute(prop) : this.setAttribute(prop, val);
- });
- });
-
- // initialize slider
- slider.readOnly = true;
- style(slider, styles);
- update();
-
- slider.addEventListener('DOMAttrModified', function(e) {
- // note that value attribute only sets initial value
- if (e.attrName == 'value' && !isValueSet) {
- value = e.newValue;
- draw();
- }
- else if (~['min', 'max', 'step'].indexOf(e.attrName)) {
- update();
- areAttrsSet = true;
- }
- }, true);
-
- slider.addEventListener('mousedown', onDragStart, true);
- slider.addEventListener('keydown', onKeyDown, true);
- slider.addEventListener('focus', onFocus, true);
- slider.addEventListener('blur', onBlur, true);
-
- function onDragStart(e) {
- isClick = true;
- setTimeout(function() { isClick = false; }, 0);
- if (e.button || !range)
- return;
- var width = parseFloat(getComputedStyle(this, 0).width);
- var multiplier = (width - thumb.width) / range;
- if (!multiplier)
- return;
- // distance between click and center of thumb
- var dev = e.clientX - this.getBoundingClientRect().left - thumb.width / 2 -
- (value - min) * multiplier;
- // if click was not on thumb, move thumb to click location
- if (Math.abs(dev) > thumb.radius) {
- isChanged = true;
- this.value -= -dev / multiplier;
- }
- rawValue = value;
- prevX = e.clientX;
- this.addEventListener('mousemove', onDrag, true);
- this.addEventListener('mouseup', onDragEnd, true);
- }
-
- function onDrag(e) {
- var width = parseFloat(getComputedStyle(this, 0).width);
- var multiplier = (width - thumb.width) / range;
- if (!multiplier)
- return;
- rawValue += (e.clientX - prevX) / multiplier;
- prevX = e.clientX;
- isChanged = true;
- this.value = rawValue;
- }
-
- function onDragEnd() {
- this.removeEventListener('mousemove', onDrag, true);
- this.removeEventListener('mouseup', onDragEnd, true);
- }
-
- function onKeyDown(e) {
- if (e.keyCode > 36 && e.keyCode < 41) { // 37-40: left, up, right, down
- onFocus.call(this);
- isChanged = true;
- this.value = value + (e.keyCode == 38 || e.keyCode == 39 ? step : -step);
- }
- }
-
- function onFocus() {
- if (!isClick)
- this.style.boxShadow = !isMac ? '0 0 0 2px #fb0' :
- '0 0 2px 1px -moz-mac-focusring, inset 0 0 1px -moz-mac-focusring';
- }
-
- function onBlur() {
- this.style.boxShadow = '';
- }
-
- // determines whether value is valid number in attribute form
- function isAttrNum(value) {
- return !isNaN(value) && +value == parseFloat(value);
- }
-
- // validates min, max, and step attributes and redraws
- function update() {
- min = isAttrNum(slider.min) ? +slider.min : 0;
- max = isAttrNum(slider.max) ? +slider.max : 100;
- if (max < min)
- max = min > 100 ? min : 100;
- step = isAttrNum(slider.step) && slider.step > 0 ? +slider.step : 1;
- range = max - min;
- draw(true);
- }
-
- // recalculates value property
- function calc() {
- if (!isValueSet && !areAttrsSet)
- value = slider.getAttribute('value');
- if (!isAttrNum(value))
- value = (min + max) / 2;;
- // snap to step intervals (WebKit sometimes does not - bug?)
- value = Math.round((value - min) / step) * step + min;
- if (value < min)
- value = min;
- else if (value > max)
- value = min + ~~(range / step) * step;
- }
-
- // renders slider using CSS background ;)
- function draw(attrsModified) {
- calc();
- if (isChanged && value != prevValue)
- slider.dispatchEvent(onChange);
- isChanged = false;
- if (!attrsModified && value == prevValue)
- return;
- prevValue = value;
- var position = range ? (value - min) / range * 100 : 0;
- var bg = '-moz-element(#__sliderthumb__) ' + position + '% no-repeat, ';
- style(slider, { background: bg + track });
- }
-
-}
-
-function style(element, styles) {
- for (var prop in styles)
- element.style.setProperty(prop, styles[prop], 'important');
-}
-
-})();
projects / mediagoblin.git / commitdiff