\n\t\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\n\t\n\t\t\n\t\n
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Struts example source code file (Slider.js)
This example Struts source code file (Slider.js) is included in the DevDaily.com
"Java Source Code
Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.
The Struts Slider.js source code
/*
Copyright (c) 2004-2006, The Dojo Foundation
All Rights Reserved.
Licensed under the Academic Free License version 2.1 or above OR the
modified BSD license. For more information on Dojo licensing, see:
http://dojotoolkit.org/community/licensing.shtml
*/
dojo.provide("dojo.widget.Slider");
dojo.require("dojo.event.*");
dojo.require("dojo.dnd.*");
dojo.require("dojo.dnd.HtmlDragMove");
dojo.require("dojo.widget.*");
dojo.require("dojo.html.layout");
dojo.widget.defineWidget("dojo.widget.Slider", dojo.widget.HtmlWidget, {minimumX:0, minimumY:0, maximumX:10, maximumY:10, snapValuesX:0, snapValuesY:0, _snapToGrid:true, isEnableX:true, isEnableY:true, _valueSizeX:0, _valueSizeY:0, _minX:0, _minY:0, _constraintWidth:0, _constraintHeight:0, _clipLeft:0, _clipRight:0, _clipTop:0, _clipBottom:0, _clipXdelta:0, _clipYdelta:0, initialValueX:0, initialValueY:0, flipX:false, flipY:false, clickSelect:true, activeDrag:false, templateCssString:".sliderMain {\n border: 0px !important;\n border-spacing: 0px !important;\n line-height: 0px !important;\n padding: 0px !important;\n display: -moz-inline-table !important;\n display: inline !important;\n -moz-user-focus: normal !important;\n}\n\n.sliderComponent {\n border: 0px;\n padding: 0px;\n margin: 0px;\n}\n\n.sliderHandle { \n top: 0px;\n left: 0px;\n z-index: 1000;\n position: absolute !important;\n}\n\n.sliderOutsetButton { \n border-style: outset;\n border-width: 0px 1px 1px 0px;\n border-color: black;\n}\n\n.sliderInsetButton { \n border-style: inset;\n border-width: 1px 0px 0px 1px;\n border-color: black;\n}\n\n.sliderButtonY {\n margin: 0px;\n padding: 0px;\n z-index: 900;\n}\n\n.sliderButtonX {\n margin: 0px;\n padding: 0px;\n z-index: 900;\n}\n\n.sliderBackground { \n z-index: 0;\n display: block !important;\n position: relative !important;\n}\n\n.sliderProgressBackground { \n z-index: 800;\n position: absolute !important;\n clip: rect(0px,0px,0px,0px);\n}\n\n.sliderBackgroundSizeOnly { \n}\n", templateCssPath:dojo.uri.moduleUri("dojo.widget", "templates/Slider.css"), templateString:"<table _=\"weird end tag formatting is to prevent whitespace from becoming \" \n\tclass=\"sliderMain\" \n\tdojoAttachPoint=\"focusNode\" \n\tdojoAttachEvent=\"onmousedown:_setFocus; onkey:_handleKeyEvents; onkeyup:_buttonReleased; onmouseup:_buttonReleased; onmousewheel:_mouseWheeled;\"\n\ttabindex=\"0\" cols=3 cellpadding=0 cellspacing=0 style=\"\">\n\t |
![]() |
![]() | ![](\"${this.handleSrc}\") ![](\"${this.progressBackgroundSrc}\"\n\t\t\t\tclass=\"sliderBackgroundSizeOnly) ![](\"${this.backgroundSrc}\") | ![]() |
![]() |
\n", _isDragInProgress:false, bottomButtonSrc:dojo.uri.moduleUri("dojo.widget", "templates/images/slider_down_arrow.png"), topButtonSrc:dojo.uri.moduleUri("dojo.widget", "templates/images/slider_up_arrow.png"), leftButtonSrc:dojo.uri.moduleUri("dojo.widget", "templates/images/slider_left_arrow.png"), rightButtonSrc:dojo.uri.moduleUri("dojo.widget", "templates/images/slider_right_arrow.png"), backgroundSrc:dojo.uri.moduleUri("dojo.widget", "templates/images/blank.gif"), progressBackgroundSrc:dojo.uri.moduleUri("dojo.widget", "templates/images/blank.gif"), backgroundSize:"width:200px;height:200px;", backgroundStyle:"", buttonStyleX:"", buttonStyleY:"", handleStyle:"", handleSrc:dojo.uri.moduleUri("dojo.widget", "templates/images/slider-button.png"), showButtons:true, _eventCount:0, _typamaticTimer:null, _typamaticFunction:null, defaultTimeout:500, timeoutChangeRate:0.9, _currentTimeout:this.defaultTimeout, _handleKeyEvents:function (evt) {
if (!evt.key) {
return;
}
if (!evt.ctrlKey && !evt.altKey) {
switch (evt.key) {
case evt.KEY_LEFT_ARROW:
dojo.event.browser.stopEvent(evt);
this._leftButtonPressed(evt);
return;
case evt.KEY_RIGHT_ARROW:
dojo.event.browser.stopEvent(evt);
this._rightButtonPressed(evt);
return;
case evt.KEY_DOWN_ARROW:
dojo.event.browser.stopEvent(evt);
this._bottomButtonPressed(evt);
return;
case evt.KEY_UP_ARROW:
dojo.event.browser.stopEvent(evt);
this._topButtonPressed(evt);
return;
}
}
this._eventCount++;
}, _pressButton:function (buttonNode) {
buttonNode.className = buttonNode.className.replace("Outset", "Inset");
}, _releaseButton:function (buttonNode) {
buttonNode.className = buttonNode.className.replace("Inset", "Outset");
}, _buttonPressed:function (evt, buttonNode) {
this._setFocus();
if (typeof evt == "object") {
if (this._typamaticTimer != null) {
if (this._typamaticNode == buttonNode) {
return;
}
clearTimeout(this._typamaticTimer);
}
this._buttonReleased(null);
this._eventCount++;
this._typamaticTimer = null;
this._currentTimeout = this.defaultTimeout;
dojo.event.browser.stopEvent(evt);
} else {
if (evt != this._eventCount) {
this._buttonReleased(null);
return false;
}
}
if (buttonNode == this.leftButtonNode && this.isEnableX) {
this._snapX(dojo.html.getPixelValue(this.sliderHandleNode, "left") - this._valueSizeX);
} else {
if (buttonNode == this.rightButtonNode && this.isEnableX) {
this._snapX(dojo.html.getPixelValue(this.sliderHandleNode, "left") + this._valueSizeX);
} else {
if (buttonNode == this.topButtonNode && this.isEnableY) {
this._snapY(dojo.html.getPixelValue(this.sliderHandleNode, "top") - this._valueSizeY);
} else {
if (buttonNode == this.bottomButtonNode && this.isEnableY) {
this._snapY(dojo.html.getPixelValue(this.sliderHandleNode, "top") + this._valueSizeY);
} else {
return false;
}
}
}
}
this._pressButton(buttonNode);
this.notifyListeners();
this._typamaticNode = buttonNode;
this._typamaticTimer = dojo.lang.setTimeout(this, "_buttonPressed", this._currentTimeout, this._eventCount, buttonNode);
this._currentTimeout = Math.round(this._currentTimeout * this.timeoutChangeRate);
return false;
}, _bottomButtonPressed:function (evt) {
return this._buttonPressed(evt, this.bottomButtonNode);
}, _bottomButtonDoubleClicked:function (evt) {
var rc = this._bottomButtonPressed(evt);
dojo.lang.setTimeout(this, "_buttonReleased", 50, null);
return rc;
}, _topButtonPressed:function (evt) {
return this._buttonPressed(evt, this.topButtonNode);
}, _topButtonDoubleClicked:function (evt) {
var rc = this._topButtonPressed(evt);
dojo.lang.setTimeout(this, "_buttonReleased", 50, null);
return rc;
}, _leftButtonPressed:function (evt) {
return this._buttonPressed(evt, this.leftButtonNode);
}, _leftButtonDoubleClicked:function (evt) {
var rc = this._leftButtonPressed(evt);
dojo.lang.setTimeout(this, "_buttonReleased", 50, null);
return rc;
}, _rightButtonPressed:function (evt) {
return this._buttonPressed(evt, this.rightButtonNode);
}, _rightButtonDoubleClicked:function (evt) {
var rc = this._rightButtonPressed(evt);
dojo.lang.setTimeout(this, "_buttonReleased", 50, null);
return rc;
}, _buttonReleased:function (evt) {
if (typeof evt == "object" && evt != null && typeof evt.keyCode != "undefined" && evt.keyCode != null) {
var keyCode = evt.keyCode;
switch (keyCode) {
case evt.KEY_LEFT_ARROW:
case evt.KEY_RIGHT_ARROW:
case evt.KEY_DOWN_ARROW:
case evt.KEY_UP_ARROW:
dojo.event.browser.stopEvent(evt);
break;
}
}
this._releaseButton(this.topButtonNode);
this._releaseButton(this.bottomButtonNode);
this._releaseButton(this.leftButtonNode);
this._releaseButton(this.rightButtonNode);
this._eventCount++;
if (this._typamaticTimer != null) {
clearTimeout(this._typamaticTimer);
}
this._typamaticTimer = null;
this._currentTimeout = this.defaultTimeout;
}, _mouseWheeled:function (evt) {
var scrollAmount = 0;
if (typeof evt.wheelDelta == "number") {
scrollAmount = evt.wheelDelta;
} else {
if (typeof evt.detail == "number") {
scrollAmount = -evt.detail;
}
}
if (this.isEnableY) {
if (scrollAmount > 0) {
this._topButtonPressed(evt);
this._buttonReleased(evt);
} else {
if (scrollAmount < 0) {
this._bottomButtonPressed(evt);
this._buttonReleased(evt);
}
}
} else {
if (this.isEnableX) {
if (scrollAmount > 0) {
this._rightButtonPressed(evt);
this._buttonReleased(evt);
} else {
if (scrollAmount < 0) {
this._leftButtonPressed(evt);
this._buttonReleased(evt);
}
}
}
}
}, _discardEvent:function (evt) {
dojo.event.browser.stopEvent(evt);
}, _setFocus:function () {
if (this.focusNode.focus) {
this.focusNode.focus();
}
}, fillInTemplate:function (args, frag) {
var source = this.getFragNodeRef(frag);
dojo.html.copyStyle(this.domNode, source);
var padding = this.domNode.style.padding;
if (dojo.lang.isString(padding) && padding != "" && padding != "0px" && padding != "0px 0px 0px 0px") {
this.topBorderNode.style.padding = this.bottomBorderNode.style.padding = padding;
this.topBorderNode.style.paddingBottom = "0px";
this.bottomBorderNode.style.paddingTop = "0px";
this.rightBorderNode.style.paddingRight = this.domNode.style.paddingRight;
this.leftBorderNode.style.paddingLeft = this.domNode.style.paddingLeft;
this.domNode.style.padding = "0px 0px 0px 0px";
}
var borderWidth = this.domNode.style.borderWidth;
if (dojo.lang.isString(borderWidth) && borderWidth != "" && borderWidth != "0px" && borderWidth != "0px 0px 0px 0px") {
this.topBorderNode.style.borderStyle = this.rightBorderNode.style.borderStyle = this.bottomBorderNode.style.borderStyle = this.leftBorderNode.style.borderStyle = this.domNode.style.borderStyle;
this.topBorderNode.style.borderColor = this.rightBorderNode.style.borderColor = this.bottomBorderNode.style.borderColor = this.leftBorderNode.style.borderColor = this.domNode.style.borderColor;
this.topBorderNode.style.borderWidth = this.bottomBorderNode.style.borderWidth = borderWidth;
this.topBorderNode.style.borderBottomWidth = "0px";
this.bottomBorderNode.style.borderTopWidth = "0px";
this.rightBorderNode.style.borderRightWidth = this.domNode.style.borderRightWidth;
this.leftBorderNode.style.borderLeftWidth = this.domNode.style.borderLeftWidth;
this.domNode.style.borderWidth = "0px 0px 0px 0px";
}
this._handleMove = new dojo.widget._SliderDragMoveSource(this.sliderHandleNode);
this._handleMove.setParent(this);
if (this.clickSelect) {
dojo.event.connect(this.constrainingContainerNode, "onmousedown", this, "_onClick");
}
if (this.isEnableX) {
this.setValueX(!isNaN(this.initialValueX) ? this.initialValueX : (!isNaN(this.minimumX) ? this.minimumX : 0));
}
if (!this.isEnableX || !this.showButtons) {
this.rightButtonNode.style.width = "1px";
this.rightButtonNode.style.visibility = "hidden";
this.leftButtonNode.style.width = "1px";
this.leftButtonNode.style.visibility = "hidden";
}
if (this.isEnableY) {
this.setValueY(!isNaN(this.initialValueY) ? this.initialValueY : (!isNaN(this.minimumY) ? this.minimumY : 0));
}
if (!this.isEnableY || !this.showButtons) {
this.bottomButtonNode.style.width = "1px";
this.bottomButtonNode.style.visibility = "hidden";
this.topButtonNode.style.width = "1px";
this.topButtonNode.style.visibility = "hidden";
}
if (this.focusNode.addEventListener) {
this.focusNode.addEventListener("DOMMouseScroll", dojo.lang.hitch(this, "_mouseWheeled"), false);
}
}, _snapX:function (x) {
if (x < 0) {
x = 0;
} else {
if (x > this._constraintWidth) {
x = this._constraintWidth;
} else {
var selectedValue = Math.round(x / this._valueSizeX);
x = Math.round(selectedValue * this._valueSizeX);
}
}
this.sliderHandleNode.style.left = x + "px";
if (this.flipX) {
this._clipLeft = x + this._clipXdelta;
} else {
this._clipRight = x + this._clipXdelta;
}
this.progressBackgroundNode.style.clip = "rect(" + this._clipTop + "px," + this._clipRight + "px," + this._clipBottom + "px," + this._clipLeft + "px)";
}, _calc_valueSizeX:function () {
var constrainingCtrBox = dojo.html.getContentBox(this.constrainingContainerNode);
var sliderHandleBox = dojo.html.getContentBox(this.sliderHandleNode);
if (isNaN(constrainingCtrBox.width) || isNaN(sliderHandleBox.width) || constrainingCtrBox.width <= 0 || sliderHandleBox.width <= 0) {
return false;
}
this._constraintWidth = constrainingCtrBox.width + dojo.html.getPadding(this.constrainingContainerNode).width - sliderHandleBox.width;
if (this.flipX) {
this._clipLeft = this._clipRight = constrainingCtrBox.width;
} else {
this._clipLeft = this._clipRight = 0;
}
this._clipXdelta = sliderHandleBox.width >> 1;
if (!this.isEnableY) {
this._clipTop = 0;
this._clipBottom = constrainingCtrBox.height;
}
if (this._constraintWidth <= 0) {
return false;
}
if (this.snapValuesX == 0) {
this.snapValuesX = this._constraintWidth + 1;
}
this._valueSizeX = this._constraintWidth / (this.snapValuesX - 1);
return true;
}, setValueX:function (value) {
if (0 == this._valueSizeX) {
if (this._calc_valueSizeX() == false) {
dojo.lang.setTimeout(this, "setValueX", 100, value);
return;
}
}
if (isNaN(value)) {
value = 0;
}
if (value > this.maximumX) {
value = this.maximumX;
} else {
if (value < this.minimumX) {
value = this.minimumX;
}
}
var pixelPercent = (value - this.minimumX) / (this.maximumX - this.minimumX);
if (this.flipX) {
pixelPercent = 1 - pixelPercent;
}
this._snapX(pixelPercent * this._constraintWidth);
this.notifyListeners();
}, getValueX:function () {
var pixelPercent = dojo.html.getPixelValue(this.sliderHandleNode, "left") / this._constraintWidth;
if (this.flipX) {
pixelPercent = 1 - pixelPercent;
}
return Math.round(pixelPercent * (this.snapValuesX - 1)) * ((this.maximumX - this.minimumX) / (this.snapValuesX - 1)) + this.minimumX;
}, _snapY:function (y) {
if (y < 0) {
y = 0;
} else {
if (y > this._constraintHeight) {
y = this._constraintHeight;
} else {
var selectedValue = Math.round(y / this._valueSizeY);
y = Math.round(selectedValue * this._valueSizeY);
}
}
this.sliderHandleNode.style.top = y + "px";
if (this.flipY) {
this._clipTop = y + this._clipYdelta;
} else {
this._clipBottom = y + this._clipYdelta;
}
this.progressBackgroundNode.style.clip = "rect(" + this._clipTop + "px," + this._clipRight + "px," + this._clipBottom + "px," + this._clipLeft + "px)";
}, _calc_valueSizeY:function () {
var constrainingCtrBox = dojo.html.getContentBox(this.constrainingContainerNode);
var sliderHandleBox = dojo.html.getContentBox(this.sliderHandleNode);
if (isNaN(constrainingCtrBox.height) || isNaN(sliderHandleBox.height) || constrainingCtrBox.height <= 0 || sliderHandleBox.height <= 0) {
return false;
}
this._constraintHeight = constrainingCtrBox.height + dojo.html.getPadding(this.constrainingContainerNode).height - sliderHandleBox.height;
if (this.flipY) {
this._clipTop = this._clipBottom = constrainingCtrBox.height;
} else {
this._clipTop = this._clipBottom = 0;
}
this._clipYdelta = sliderHandleBox.height >> 1;
if (!this.isEnableX) {
this._clipLeft = 0;
this._clipRight = constrainingCtrBox.width;
}
if (this._constraintHeight <= 0) {
return false;
}
if (this.snapValuesY == 0) {
this.snapValuesY = this._constraintHeight + 1;
}
this._valueSizeY = this._constraintHeight / (this.snapValuesY - 1);
return true;
}, setValueY:function (value) {
if (0 == this._valueSizeY) {
if (this._calc_valueSizeY() == false) {
dojo.lang.setTimeout(this, "setValueY", 100, value);
return;
}
}
if (isNaN(value)) {
value = 0;
}
if (value > this.maximumY) {
value = this.maximumY;
} else {
if (value < this.minimumY) {
value = this.minimumY;
}
}
var pixelPercent = (value - this.minimumY) / (this.maximumY - this.minimumY);
if (this.flipY) {
pixelPercent = 1 - pixelPercent;
}
this._snapY(pixelPercent * this._constraintHeight);
this.notifyListeners();
}, getValueY:function () {
var pixelPercent = dojo.html.getPixelValue(this.sliderHandleNode, "top") / this._constraintHeight;
if (this.flipY) {
pixelPercent = 1 - pixelPercent;
}
return Math.round(pixelPercent * (this.snapValuesY - 1)) * ((this.maximumY - this.minimumY) / (this.snapValuesY - 1)) + this.minimumY;
}, _onClick:function (evt) {
if (this._isDragInProgress) {
return;
}
var parent = dojo.html.getAbsolutePosition(this.constrainingContainerNode, true, dojo.html.boxSizing.MARGIN_BOX);
var content = dojo.html.getContentBox(this._handleMove.domNode);
if (this.isEnableX) {
var x = evt.pageX - parent.x - (content.width >> 1);
this._snapX(x);
}
if (this.isEnableY) {
var y = evt.pageY - parent.y - (content.height >> 1);
this._snapY(y);
}
this.notifyListeners();
}, notifyListeners:function () {
this.onValueChanged(this.getValueX(), this.getValueY());
}, onValueChanged:function (x, y) {
}});
dojo.widget.defineWidget("dojo.widget.SliderHorizontal", dojo.widget.Slider, {isEnableX:true, isEnableY:false, initialValue:"", snapValues:"", minimum:"", maximum:"", buttonStyle:"", backgroundSize:"height:10px;width:200px;", backgroundSrc:dojo.uri.moduleUri("dojo.widget", "templates/images/slider-bg.gif"), flip:false, postMixInProperties:function () {
dojo.widget.SliderHorizontal.superclass.postMixInProperties.apply(this, arguments);
if (!isNaN(parseFloat(this.initialValue))) {
this.initialValueX = parseFloat(this.initialValue);
}
if (!isNaN(parseFloat(this.minimum))) {
this.minimumX = parseFloat(this.minimum);
}
if (!isNaN(parseFloat(this.maximum))) {
this.maximumX = parseFloat(this.maximum);
}
if (!isNaN(parseInt(this.snapValues))) {
this.snapValuesX = parseInt(this.snapValues);
}
if (dojo.lang.isString(this.buttonStyle) && this.buttonStyle != "") {
this.buttonStyleX = this.buttonStyle;
}
if (dojo.lang.isBoolean(this.flip)) {
this.flipX = this.flip;
}
}, notifyListeners:function () {
this.onValueChanged(this.getValueX());
}, getValue:function () {
return this.getValueX();
}, setValue:function (value) {
this.setValueX(value);
}, onValueChanged:function (value) {
}});
dojo.widget.defineWidget("dojo.widget.SliderVertical", dojo.widget.Slider, {isEnableX:false, isEnableY:true, initialValue:"", snapValues:"", minimum:"", maximum:"", buttonStyle:"", backgroundSize:"width:10px;height:200px;", backgroundSrc:dojo.uri.moduleUri("dojo.widget", "templates/images/slider-bg-vert.gif"), flip:false, postMixInProperties:function () {
dojo.widget.SliderVertical.superclass.postMixInProperties.apply(this, arguments);
if (!isNaN(parseFloat(this.initialValue))) {
this.initialValueY = parseFloat(this.initialValue);
}
if (!isNaN(parseFloat(this.minimum))) {
this.minimumY = parseFloat(this.minimum);
}
if (!isNaN(parseFloat(this.maximum))) {
this.maximumY = parseFloat(this.maximum);
}
if (!isNaN(parseInt(this.snapValues))) {
this.snapValuesY = parseInt(this.snapValues);
}
if (dojo.lang.isString(this.buttonStyle) && this.buttonStyle != "") {
this.buttonStyleY = this.buttonStyle;
}
if (dojo.lang.isBoolean(this.flip)) {
this.flipY = this.flip;
}
}, notifyListeners:function () {
this.onValueChanged(this.getValueY());
}, getValue:function () {
return this.getValueY();
}, setValue:function (value) {
this.setValueY(value);
}, onValueChanged:function (value) {
}});
dojo.declare("dojo.widget._SliderDragMoveSource", dojo.dnd.HtmlDragMoveSource, {slider:null, onDragStart:function (evt) {
this.slider._isDragInProgress = true;
var dragObj = this.createDragMoveObject();
this.slider.notifyListeners();
return dragObj;
}, onDragEnd:function (evt) {
this.slider._isDragInProgress = false;
this.slider.notifyListeners();
}, createDragMoveObject:function () {
var dragObj = new dojo.widget._SliderDragMoveObject(this.dragObject, this.type);
dragObj.slider = this.slider;
if (this.dragClass) {
dragObj.dragClass = this.dragClass;
}
return dragObj;
}, setParent:function (slider) {
this.slider = slider;
}});
dojo.declare("dojo.widget._SliderDragMoveObject", dojo.dnd.HtmlDragMoveObject, {slider:null, onDragMove:function (evt) {
this.updateDragOffset();
if (this.slider.isEnableX) {
var x = this.dragOffset.x + evt.pageX;
this.slider._snapX(x);
}
if (this.slider.isEnableY) {
var y = this.dragOffset.y + evt.pageY;
this.slider._snapY(y);
}
if (this.slider.activeDrag) {
this.slider.notifyListeners();
}
}});
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