489 lines
15 KiB
JavaScript
489 lines
15 KiB
JavaScript
/*----------------------------------------------------------------------------\
|
|
| Slider 1.02 |
|
|
|-----------------------------------------------------------------------------|
|
|
| Created by Erik Arvidsson |
|
|
| (http://webfx.eae.net/contact.html#erik) |
|
|
| For WebFX (http://webfx.eae.net/) |
|
|
|-----------------------------------------------------------------------------|
|
|
| A slider control that degrades to an input control for non supported |
|
|
| browsers. |
|
|
|-----------------------------------------------------------------------------|
|
|
| Copyright (c) 2002, 2003, 2006 Erik Arvidsson |
|
|
|-----------------------------------------------------------------------------|
|
|
| Licensed under the Apache License, Version 2.0 (the "License"); you may not |
|
|
| use this file except in compliance with the License. You may obtain a copy |
|
|
| of the License at http://www.apache.org/licenses/LICENSE-2.0 |
|
|
| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
|
|
| Unless required by applicable law or agreed to in writing, software |
|
|
| distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
|
|
| WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
|
|
| License for the specific language governing permissions and limitations |
|
|
| under the License. |
|
|
|-----------------------------------------------------------------------------|
|
|
| Dependencies: timer.js - an OO abstraction of timers |
|
|
| range.js - provides the data model for the slider |
|
|
| winclassic.css or any other css file describing the look |
|
|
|-----------------------------------------------------------------------------|
|
|
| 2002-10-14 | Original version released |
|
|
| 2003-03-27 | Added a test in the constructor for missing oElement arg |
|
|
| 2003-11-27 | Only use mousewheel when focused |
|
|
| 2006-05-28 | Changed license to Apache Software License 2.0. |
|
|
|-----------------------------------------------------------------------------|
|
|
| Created 2002-10-14 | All changes are in the log above. | Updated 2006-05-28 |
|
|
\----------------------------------------------------------------------------*/
|
|
|
|
Slider.isSupported = typeof document.createElement != "undefined" &&
|
|
typeof document.documentElement != "undefined" &&
|
|
typeof document.documentElement.offsetWidth == "number";
|
|
|
|
|
|
function Slider(oElement, oInput, sOrientation) {
|
|
if (!oElement) return;
|
|
this._orientation = sOrientation || "horizontal";
|
|
this._range = new Range();
|
|
this._range.setExtent(0);
|
|
this._blockIncrement = 10;
|
|
this._unitIncrement = 1;
|
|
this._timer = new Timer(100);
|
|
|
|
|
|
if (Slider.isSupported && oElement) {
|
|
|
|
this.document = oElement.ownerDocument || oElement.document;
|
|
|
|
this.element = oElement;
|
|
this.element.slider = this;
|
|
this.element.unselectable = "on";
|
|
|
|
// add class name tag to class name
|
|
this.element.className = this._orientation + " " + this.classNameTag + " " + this.element.className;
|
|
|
|
// create line
|
|
this.line = this.document.createElement("DIV");
|
|
this.line.className = "line";
|
|
this.line.unselectable = "on";
|
|
this.line.appendChild(this.document.createElement("DIV"));
|
|
this.element.appendChild(this.line);
|
|
|
|
// create handle
|
|
this.handle = this.document.createElement("DIV");
|
|
this.handle.className = "handle";
|
|
this.handle.unselectable = "on";
|
|
this.handle.appendChild(this.document.createElement("DIV"));
|
|
this.handle.firstChild.appendChild(
|
|
this.document.createTextNode(String.fromCharCode(160)));
|
|
this.element.appendChild(this.handle);
|
|
}
|
|
|
|
this.input = oInput;
|
|
|
|
// events
|
|
var oThis = this;
|
|
this._range.onchange = function () {
|
|
oThis.recalculate();
|
|
if (typeof oThis.onchange == "function")
|
|
oThis.onchange();
|
|
};
|
|
|
|
if (Slider.isSupported && oElement) {
|
|
this.element.onfocus = Slider.eventHandlers.onfocus;
|
|
this.element.onblur = Slider.eventHandlers.onblur;
|
|
this.element.onmousedown = Slider.eventHandlers.onmousedown;
|
|
this.element.onmouseover = Slider.eventHandlers.onmouseover;
|
|
this.element.onmouseout = Slider.eventHandlers.onmouseout;
|
|
this.element.onkeydown = Slider.eventHandlers.onkeydown;
|
|
this.element.onkeypress = Slider.eventHandlers.onkeypress;
|
|
this.element.onmousewheel = Slider.eventHandlers.onmousewheel;
|
|
this.handle.onselectstart =
|
|
this.element.onselectstart = function () { return false; };
|
|
|
|
this._timer.ontimer = function () {
|
|
oThis.ontimer();
|
|
};
|
|
|
|
// extra recalculate for ie
|
|
window.setTimeout(function() {
|
|
oThis.recalculate();
|
|
}, 1);
|
|
}
|
|
else {
|
|
this.input.onchange = function (e) {
|
|
oThis.setValue(oThis.input.value);
|
|
};
|
|
}
|
|
}
|
|
|
|
Slider.eventHandlers = {
|
|
|
|
// helpers to make events a bit easier
|
|
getEvent: function (e, el) {
|
|
if (!e) {
|
|
if (el)
|
|
e = el.document.parentWindow.event;
|
|
else
|
|
e = window.event;
|
|
}
|
|
if (!e.srcElement) {
|
|
var el = e.target;
|
|
while (el != null && el.nodeType != 1)
|
|
el = el.parentNode;
|
|
e.srcElement = el;
|
|
}
|
|
if (typeof e.offsetX == "undefined") {
|
|
e.offsetX = e.layerX;
|
|
e.offsetY = e.layerY;
|
|
}
|
|
|
|
return e;
|
|
},
|
|
|
|
getDocument: function (e) {
|
|
if (e.target)
|
|
return e.target.ownerDocument;
|
|
return e.srcElement.document;
|
|
},
|
|
|
|
getSlider: function (e) {
|
|
var el = e.target || e.srcElement;
|
|
while (el != null && el.slider == null) {
|
|
el = el.parentNode;
|
|
}
|
|
if (el)
|
|
return el.slider;
|
|
return null;
|
|
},
|
|
|
|
getLine: function (e) {
|
|
var el = e.target || e.srcElement;
|
|
while (el != null && el.className != "line") {
|
|
el = el.parentNode;
|
|
}
|
|
return el;
|
|
},
|
|
|
|
getHandle: function (e) {
|
|
var el = e.target || e.srcElement;
|
|
var re = /handle/;
|
|
while (el != null && !re.test(el.className)) {
|
|
el = el.parentNode;
|
|
}
|
|
return el;
|
|
},
|
|
// end helpers
|
|
|
|
onfocus: function (e) {
|
|
var s = this.slider;
|
|
s._focused = true;
|
|
s.handle.className = "handle hover";
|
|
},
|
|
|
|
onblur: function (e) {
|
|
var s = this.slider
|
|
s._focused = false;
|
|
s.handle.className = "handle";
|
|
},
|
|
|
|
onmouseover: function (e) {
|
|
e = Slider.eventHandlers.getEvent(e, this);
|
|
var s = this.slider;
|
|
if (e.srcElement == s.handle)
|
|
s.handle.className = "handle hover";
|
|
},
|
|
|
|
onmouseout: function (e) {
|
|
e = Slider.eventHandlers.getEvent(e, this);
|
|
var s = this.slider;
|
|
if (e.srcElement == s.handle && !s._focused)
|
|
s.handle.className = "handle";
|
|
},
|
|
|
|
onmousedown: function (e) {
|
|
e = Slider.eventHandlers.getEvent(e, this);
|
|
var s = this.slider;
|
|
if (s.element.focus)
|
|
s.element.focus();
|
|
|
|
Slider._currentInstance = s;
|
|
var doc = s.document;
|
|
|
|
if (doc.addEventListener) {
|
|
doc.addEventListener("mousemove", Slider.eventHandlers.onmousemove, true);
|
|
doc.addEventListener("mouseup", Slider.eventHandlers.onmouseup, true);
|
|
}
|
|
else if (doc.attachEvent) {
|
|
doc.attachEvent("onmousemove", Slider.eventHandlers.onmousemove);
|
|
doc.attachEvent("onmouseup", Slider.eventHandlers.onmouseup);
|
|
doc.attachEvent("onlosecapture", Slider.eventHandlers.onmouseup);
|
|
s.element.setCapture();
|
|
}
|
|
|
|
if (Slider.eventHandlers.getHandle(e)) { // start drag
|
|
Slider._sliderDragData = {
|
|
screenX: e.screenX,
|
|
screenY: e.screenY,
|
|
dx: e.screenX - s.handle.offsetLeft,
|
|
dy: e.screenY - s.handle.offsetTop,
|
|
startValue: s.getValue(),
|
|
slider: s
|
|
};
|
|
}
|
|
else {
|
|
var lineEl = Slider.eventHandlers.getLine(e);
|
|
s._mouseX = e.offsetX + (lineEl ? s.line.offsetLeft : 0);
|
|
s._mouseY = e.offsetY + (lineEl ? s.line.offsetTop : 0);
|
|
s._increasing = null;
|
|
s.ontimer();
|
|
}
|
|
},
|
|
|
|
onmousemove: function (e) {
|
|
e = Slider.eventHandlers.getEvent(e, this);
|
|
|
|
if (Slider._sliderDragData) { // drag
|
|
var s = Slider._sliderDragData.slider;
|
|
|
|
var boundSize = s.getMaximum() - s.getMinimum();
|
|
var size, pos, reset;
|
|
|
|
if (s._orientation == "horizontal") {
|
|
size = s.element.offsetWidth - s.handle.offsetWidth;
|
|
pos = e.screenX - Slider._sliderDragData.dx;
|
|
reset = Math.abs(e.screenY - Slider._sliderDragData.screenY) > 100;
|
|
}
|
|
else {
|
|
size = s.element.offsetHeight - s.handle.offsetHeight;
|
|
pos = s.element.offsetHeight - s.handle.offsetHeight -
|
|
(e.screenY - Slider._sliderDragData.dy);
|
|
reset = Math.abs(e.screenX - Slider._sliderDragData.screenX) > 100;
|
|
}
|
|
s.setValue(reset ? Slider._sliderDragData.startValue :
|
|
s.getMinimum() + boundSize * pos / size);
|
|
return false;
|
|
}
|
|
else {
|
|
var s = Slider._currentInstance;
|
|
if (s != null) {
|
|
var lineEl = Slider.eventHandlers.getLine(e);
|
|
s._mouseX = e.offsetX + (lineEl ? s.line.offsetLeft : 0);
|
|
s._mouseY = e.offsetY + (lineEl ? s.line.offsetTop : 0);
|
|
}
|
|
}
|
|
|
|
},
|
|
|
|
onmouseup: function (e) {
|
|
e = Slider.eventHandlers.getEvent(e, this);
|
|
var s = Slider._currentInstance;
|
|
var doc = s.document;
|
|
if (doc.removeEventListener) {
|
|
doc.removeEventListener("mousemove", Slider.eventHandlers.onmousemove, true);
|
|
doc.removeEventListener("mouseup", Slider.eventHandlers.onmouseup, true);
|
|
}
|
|
else if (doc.detachEvent) {
|
|
doc.detachEvent("onmousemove", Slider.eventHandlers.onmousemove);
|
|
doc.detachEvent("onmouseup", Slider.eventHandlers.onmouseup);
|
|
doc.detachEvent("onlosecapture", Slider.eventHandlers.onmouseup);
|
|
s.element.releaseCapture();
|
|
}
|
|
|
|
if (Slider._sliderDragData) { // end drag
|
|
Slider._sliderDragData = null;
|
|
}
|
|
else {
|
|
s._timer.stop();
|
|
s._increasing = null;
|
|
}
|
|
Slider._currentInstance = null;
|
|
},
|
|
|
|
onkeydown: function (e) {
|
|
e = Slider.eventHandlers.getEvent(e, this);
|
|
//var s = Slider.eventHandlers.getSlider(e);
|
|
var s = this.slider;
|
|
var kc = e.keyCode;
|
|
switch (kc) {
|
|
case 33: // page up
|
|
s.setValue(s.getValue() + s.getBlockIncrement());
|
|
break;
|
|
case 34: // page down
|
|
s.setValue(s.getValue() - s.getBlockIncrement());
|
|
break;
|
|
case 35: // end
|
|
s.setValue(s.getOrientation() == "horizontal" ?
|
|
s.getMaximum() :
|
|
s.getMinimum());
|
|
break;
|
|
case 36: // home
|
|
s.setValue(s.getOrientation() == "horizontal" ?
|
|
s.getMinimum() :
|
|
s.getMaximum());
|
|
break;
|
|
case 38: // up
|
|
case 39: // right
|
|
s.setValue(s.getValue() + s.getUnitIncrement());
|
|
break;
|
|
|
|
case 37: // left
|
|
case 40: // down
|
|
s.setValue(s.getValue() - s.getUnitIncrement());
|
|
break;
|
|
}
|
|
|
|
if (kc >= 33 && kc <= 40) {
|
|
return false;
|
|
}
|
|
},
|
|
|
|
onkeypress: function (e) {
|
|
e = Slider.eventHandlers.getEvent(e, this);
|
|
var kc = e.keyCode;
|
|
if (kc >= 33 && kc <= 40) {
|
|
return false;
|
|
}
|
|
},
|
|
|
|
onmousewheel: function (e) {
|
|
e = Slider.eventHandlers.getEvent(e, this);
|
|
var s = this.slider;
|
|
if (s._focused) {
|
|
s.setValue(s.getValue() + e.wheelDelta / 120 * s.getUnitIncrement());
|
|
// windows inverts this on horizontal sliders. That does not
|
|
// make sense to me
|
|
return false;
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
|
|
Slider.prototype.classNameTag = "dynamic-slider-control",
|
|
|
|
Slider.prototype.setValue = function (v) {
|
|
this._range.setValue(v);
|
|
this.input.value = this.getValue();
|
|
};
|
|
|
|
Slider.prototype.getValue = function () {
|
|
return this._range.getValue();
|
|
};
|
|
|
|
Slider.prototype.setMinimum = function (v) {
|
|
this._range.setMinimum(v);
|
|
this.input.value = this.getValue();
|
|
};
|
|
|
|
Slider.prototype.getMinimum = function () {
|
|
return this._range.getMinimum();
|
|
};
|
|
|
|
Slider.prototype.setMaximum = function (v) {
|
|
this._range.setMaximum(v);
|
|
this.input.value = this.getValue();
|
|
};
|
|
|
|
Slider.prototype.getMaximum = function () {
|
|
return this._range.getMaximum();
|
|
};
|
|
|
|
Slider.prototype.setUnitIncrement = function (v) {
|
|
this._unitIncrement = v;
|
|
};
|
|
|
|
Slider.prototype.getUnitIncrement = function () {
|
|
return this._unitIncrement;
|
|
};
|
|
|
|
Slider.prototype.setBlockIncrement = function (v) {
|
|
this._blockIncrement = v;
|
|
};
|
|
|
|
Slider.prototype.getBlockIncrement = function () {
|
|
return this._blockIncrement;
|
|
};
|
|
|
|
Slider.prototype.getOrientation = function () {
|
|
return this._orientation;
|
|
};
|
|
|
|
Slider.prototype.setOrientation = function (sOrientation) {
|
|
if (sOrientation != this._orientation) {
|
|
if (Slider.isSupported && this.element) {
|
|
// add class name tag to class name
|
|
this.element.className = this.element.className.replace(this._orientation,
|
|
sOrientation);
|
|
}
|
|
this._orientation = sOrientation;
|
|
this.recalculate();
|
|
|
|
}
|
|
};
|
|
|
|
Slider.prototype.recalculate = function() {
|
|
if (!Slider.isSupported || !this.element) return;
|
|
|
|
var w = this.element.offsetWidth;
|
|
var h = this.element.offsetHeight;
|
|
var hw = this.handle.offsetWidth;
|
|
var hh = this.handle.offsetHeight;
|
|
var lw = this.line.offsetWidth;
|
|
var lh = this.line.offsetHeight;
|
|
|
|
// this assumes a border-box layout
|
|
|
|
if (this._orientation == "horizontal") {
|
|
this.handle.style.left = (w - hw) * (this.getValue() - this.getMinimum()) /
|
|
(this.getMaximum() - this.getMinimum()) + "px";
|
|
this.handle.style.top = (h - hh) / 2 + "px";
|
|
|
|
this.line.style.top = (h - lh) / 2 + "px";
|
|
this.line.style.left = hw / 2 + "px";
|
|
//this.line.style.right = hw / 2 + "px";
|
|
this.line.style.width = Math.max(0, w - hw - 2)+ "px";
|
|
this.line.firstChild.style.width = Math.max(0, w - hw - 4)+ "px";
|
|
}
|
|
else {
|
|
this.handle.style.left = (w - hw) / 2 + "px";
|
|
this.handle.style.top = h - hh - (h - hh) * (this.getValue() - this.getMinimum()) /
|
|
(this.getMaximum() - this.getMinimum()) + "px";
|
|
|
|
this.line.style.left = (w - lw) / 2 + "px";
|
|
this.line.style.top = hh / 2 + "px";
|
|
this.line.style.height = Math.max(0, h - hh - 2) + "px"; //hard coded border width
|
|
//this.line.style.bottom = hh / 2 + "px";
|
|
this.line.firstChild.style.height = Math.max(0, h - hh - 4) + "px"; //hard coded border width
|
|
}
|
|
};
|
|
|
|
Slider.prototype.ontimer = function () {
|
|
var hw = this.handle.offsetWidth;
|
|
var hh = this.handle.offsetHeight;
|
|
var hl = this.handle.offsetLeft;
|
|
var ht = this.handle.offsetTop;
|
|
|
|
if (this._orientation == "horizontal") {
|
|
if (this._mouseX > hl + hw &&
|
|
(this._increasing == null || this._increasing)) {
|
|
this.setValue(this.getValue() + this.getBlockIncrement());
|
|
this._increasing = true;
|
|
}
|
|
else if (this._mouseX < hl &&
|
|
(this._increasing == null || !this._increasing)) {
|
|
this.setValue(this.getValue() - this.getBlockIncrement());
|
|
this._increasing = false;
|
|
}
|
|
}
|
|
else {
|
|
if (this._mouseY > ht + hh &&
|
|
(this._increasing == null || !this._increasing)) {
|
|
this.setValue(this.getValue() - this.getBlockIncrement());
|
|
this._increasing = false;
|
|
}
|
|
else if (this._mouseY < ht &&
|
|
(this._increasing == null || this._increasing)) {
|
|
this.setValue(this.getValue() + this.getBlockIncrement());
|
|
this._increasing = true;
|
|
}
|
|
}
|
|
|
|
this._timer.start();
|
|
}; |