javaxt-webcontrols/src/button/Button.js at dev · javaxt-project/javaxt-webcontrols · GitHub

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if(!javaxt) var javaxt={};

if(!javaxt.dhtml) javaxt.dhtml={};

//******************************************************************************

//** Button Class

//******************************************************************************

/**

* Custom button control. The button has 3 parts: icon, label, and an arrow.

******************************************************************************/

javaxt.dhtml.Button = function(parent, config) {

this.className = "javaxt.dhtml.Button";

var me = this;

var defaultConfig = {

/** Text label for the button.

label: null,

/** If true, the button will initially appear in a selected state and the

* isSelected() method will return true. Default is false.

selected: false,

/** If true, the button will initially appear disabled and the

* isDisabled() method will return true. Default is false.

disabled: false,

/** If true, the button will be rendered as a toggle button. Default is

* false, unless the button has a menu.

toggle: false,

/** If true, will create a drop-down menu for the button. Components such

* as buttons or custom DOM elements can be added directly to the menu.

* See getMenuPanel() for more information.

menu: false,

/** Sets the position of the menu panel. Options are "bottom" or "right".

menuAlign: "bottom",

/** Used to set the "display" style attribute for the outer DOM element.

* This is not commonly ued. Default is "inline-block".

display: "inline-block",

/** Used to set the width of the button. This property is optional.

width: null,

/** Used to set the height of the button. This property is optional.

height: null,

/** Used to set the icon position relative to the button label. Options

* are "left" or "right". Note that the icon style is set in the style

* config. The icon style should not be used to control whether the

* icon appears to the left or right of the label. Use this config

* instead.

iconAlign: "left",

/** Used to set spacing between the button icon and the button label.

* Default is "5px".

iconPadding: "5px",

/** Style for individual elements within the component. Note that you can

* provide CSS class names instead of individual style definitions.

style:{

button: {

border: "1px solid #cccccc",

borderRadius: "3px",

background: "#F6F6F6",

cursor: "pointer",

padding: "3px 7px",

margin: "0px",

color: "#2b2b2b"

label: {

fontFamily: "helvetica,arial,verdana,sans-serif",

fontSize: "14px",

whiteSpace: "nowrap"

icon: {

arrow: {

select: {

background: "#007FFF",

border: "1px solid #003EFF",

color: "#FFFFFF"

hover: {

background: "#ededed"

menu: {

border: "1px solid #cccccc",

background: "#F6F6F6",

cursor: "pointer",

padding: "3px 3px",

zIndex: "1"

}

/** Sound to play when the button is clicked

sound: null

};

var mainDiv;

var mask, menu;

var icon, label, arrow;

//**************************************************************************

//** Constructor

//**************************************************************************

var init = function(){

if (typeof parent === "string"){

parent = document.getElementById(parent);

}

if (!parent) return;

//Clone the config so we don't modify the original config object

var clone = {};

merge(clone, config);

//Merge clone with default config

merge(clone, defaultConfig);

config = clone;

//Get icon alignment

var iconAlignment = config.style.iconAlign; //legacy

if (!iconAlignment) iconAlignment = config.iconAlign; //preferred

if (iconAlignment!=="right") iconAlignment = "left";

config.iconAlign = iconAlignment;

//Get menu alignment

var menuAlignment = config.style.menuAlignment; //legacy

if (!menuAlignment) menuAlignment = config.menuAlign; //preferred

if (menuAlignment!=="right") menuAlignment = "bottom";

//Update arrow style as needed

if (config.menu===true){

var arrowDefined = false;

if (typeof config.style.arrow === "string"){

arrowDefined = true;

}

else{

for (var key in config.style.arrow){

if (config.style.arrow.hasOwnProperty(key)){

arrowDefined = true;

break;

}

if (!arrowDefined){

if (menuAlignment==="bottom"){

config.style.arrow = {

width: 0,

height: 0,

borderLeft: "5px solid transparent",

borderRight: "5px solid transparent",

borderTop: "5px solid #575757",

marginLeft: "10px"

};

config.style.arrowSelect = {

borderTop: "5px solid #FFFFFF"

};

}

//Create outer div used to hold the button, mask, and menu

var outerDiv = createElement('div', parent);

outerDiv.className = "javaxt-button";

outerDiv.style.display = config.display;

if (config.width){

if (typeof config.width === "string"){

outerDiv.style.width = config.width;

}

else{

outerDiv.style.width = config.width + "px";

}

if (config.height){

if (typeof config.height === "string"){

outerDiv.style.height = config.height;

}

else{

outerDiv.style.height = config.height + "px";

}

outerDiv.style.position = "relative";

if (config.hidden===true){ //legacy config...

outerDiv.style.visibility = 'hidden';

outerDiv.style.display = 'none';

}

me.el = outerDiv;

//The button is implemented using a simple HTML table with 3 columns. The

//left and right columns are for icons and the center column is for the

//button label. The width of the center column is set to 100% and the

//width of the left and right columns are defined by the "icon" and

//"arrow" styles. Unfortunately, some browsers seem to have issues

//rendering the table correctly inside of a div when the outerDiv's

//display style set to "inline-block". For example, Mobile Safari will

//completely ignore the "inline-block" style and stretch the button to

//100% of the available width. In Chrome, if the left or right columns has

//a width, the "inline-block" style is ignored and the button is stretched

//to 100% of the available width. As a workaround, it looks like we can

//wrap the button div in another div with the display style set to "table".

var tableDiv = createElement('div', outerDiv);

if (outerDiv.style.display==="inline-block"){

tableDiv.style.display = "table";

if (config.width) tableDiv.style.width = outerDiv.style.width;

}

tableDiv.style.height = "100%";

//Create main div used to represent the button

mainDiv = createElement('div', tableDiv, config.style.button);

mainDiv.setAttribute("desc", "button");

addEventHandlers(mainDiv);

var table = createTable(mainDiv);

table.style.fontFamily = "inherit";

table.style.textAlign = "inherit";

table.style.color = "inherit";

var tr = table.addRow();

var td;

//Add icon (or label)

td = tr.addColumn();

if (iconAlignment==="left"){

icon = createElement("div", td, config.style.icon);

}

else{

arrow = createElement("div", td, config.style.arrow);

}

//Add label

td = tr.addColumn({width: "100%"});

label = createElement("div", td);

setStyle(label, "label");

//Add arrow (or icon)

td = tr.addColumn();

if (iconAlignment==="left"){

arrow = createElement("div", td, config.style.arrow);

}

else{

icon = createElement("div", td, config.style.icon);

}

//Add show/hide to components

addShowHide(label);

addShowHide(icon);

addShowHide(arrow);

//Hide icon as needed

var hideIcon = true;

if (typeof config.style.icon === "string"){

hideIcon = false;

}

else{

for (var key in config.style.icon){

if (config.style.icon.hasOwnProperty(key)){

hideIcon = false;

break;

}

if (hideIcon) icon.hide();

//Create menu panel as needed

if (config.menu===true){

config.toggle = true;

menu = createElement('div', outerDiv, config.style.menu);

menu.setAttribute("desc", "menu");

menu.style.position = "absolute";

menu.style.visibility = "hidden";

var hideMenu = function(e){

if (!mainDiv.contains(e.target)){

menu.style.visibility = "hidden";

me.deselect();

}

};

//Hide menu if the client clicks outside of the menu

window.addEventListener('click', hideMenu);

//Create logic to process touch events

var touchStartTime, touchEndTime;

var x1, x2, y1, y2;

window.addEventListener('touchstart', function(e){

x1 = e.changedTouches[0].pageX;

y1 = e.changedTouches[0].pageY;

touchStartTime = new Date().getTime();

touchEndTime = null;

});

window.addEventListener('touchend', function(e){

touchEndTime= new Date().getTime();

x2 = e.changedTouches[0].pageX;

y2 = e.changedTouches[0].pageY;

var distance = Math.sqrt( (x2-=x1)*x2 + (y2-=y1)*y2 );

if (distance<0) distance = -distance;

var duration = touchEndTime - touchStartTime;

if ((duration <= 500 && distance <= 10) || //Quick tap

(duration > 500 && distance <= 10)) { //Long press

hideMenu(e);

}

});

}

//Set button label

me.setLabel(config.label);

//Set button state

if (config.disabled===true) me.disable();

if (config.selected===true) me.select();

//Add public show/hide methods

addShowHide(me);

};

//**************************************************************************

//** addEventHandlers

//**************************************************************************

var addEventHandlers = function(div){

//Disable text selection

div.unselectable="on";

div.onselectstart=function(){return false;};

//Create onclick function

var onclick = function(e){

e.stopPropagation();

if (config.sound!=null) config.sound.play();

if (config.toggle===true){

if (menu){

if (isTouch){

me.toggle();

}

else{

//Do nothing - button is toggled on mouse down...

}

else{

me.toggle();

}

else{

setDefaultStyle(mainDiv);

}

me.onClick();

};

//Create logic to process touch events

var touchStartTime;

var touchEndTime;

var x1, x2, y1, y2;

var isTouch = false;

div.ontouchstart = function(e) {

isTouch = true;

e.preventDefault();

x1 = e.changedTouches[0].pageX;

y1 = e.changedTouches[0].pageY;

touchStartTime = new Date().getTime();

touchEndTime = null;

if (div.selected!==true){

setHoverStyle(div);

}

};

div.ontouchend = function(e) {

touchEndTime= new Date().getTime();

x2 = e.changedTouches[0].pageX;

y2 = e.changedTouches[0].pageY;

var distance = Math.sqrt( (x2-=x1)*x2 + (y2-=y1)*y2 );

if (distance<0) distance = -distance;

var duration = touchEndTime - touchStartTime;

if ((duration <= 500 && distance <= 10) || //Quick tap

(duration > 500 && distance <= 10)) { //Long press

onclick(e);

}

else{

setDefaultStyle(div);

}

};

//Logic to process mouse events

if (!isTouch){

div.onmousedown=function(){

setSelectStyle(div);

if (menu){

me.toggle();

//TODO: Add mouseup events to buttons in the menu

}

//return false;

};

div.onclick = function(e){

onclick(e);

};

div.onmouseover = function(){

if (div.selected!==true){

setHoverStyle(div);

}

};

div.onmouseout = function(){

if (div.selected!==true){

setDefaultStyle(div);

}

};

}

};

//**************************************************************************

//** click

//**************************************************************************

/** Used to click the button and fire onClick event

this.click = function(){

mainDiv.click();

};

//**************************************************************************

//** onClick

//**************************************************************************

/** Called whenever the button is clicked.

this.onClick = function(){};

//**************************************************************************

//** getText

//**************************************************************************

/** Returns the button label. Same as getLabel().

this.getText = function(){

return me.getLabel();

};

//**************************************************************************

//** getLabel

//**************************************************************************

/** Returns the button label.

this.getLabel = function(){

return label.innerText;

};

//**************************************************************************

//** setLabel

//**************************************************************************

/** Used to update the button label.

this.setLabel = function(str){

if (typeof str === 'undefined' || str===null || str.length===0){

label.hide();

}

else{

label.innerText = str+"";

label.show();

addLabelPadding();

}

};

//**************************************************************************

//** enable

//**************************************************************************

/** Used to enable the button.

this.enable = function(){

var outerDiv = me.el;

outerDiv.style.opacity = "";

if (mask) mask.style.visibility = "hidden";

};

//**************************************************************************

//** disable

//**************************************************************************

/** Used to disable the button.

this.disable = function(){

var outerDiv = me.el;

outerDiv.style.opacity = "0.5";

if (mask){

mask.style.visibility = "visible";

}

else{

mask = createElement('div',{

position: "absolute",

zIndex: "1",

width: "100%",

height: "100%"

});

mask.setAttribute("desc", "mask");

outerDiv.insertBefore(mask, outerDiv.firstChild);

}

};

//**************************************************************************

//** isEnabled

//**************************************************************************

/** Returns true if the button is enabled (i.e. not disabled).

this.isEnabled = function(){

return !me.isDisabled();

};

//**************************************************************************

//** isDisabled

//**************************************************************************

/** Returns true if the button is disabled.

this.isDisabled = function(){

if (mask){

if (mask.style.visibility !== "hidden") return true;

}

return false;

};

//**************************************************************************

//** select

//**************************************************************************

/** Used to update the "selected" state of the button.

this.select = function(){

if (mainDiv.selected===true) return;

mainDiv.selected = true;

setDefaultStyle(mainDiv);

setSelectStyle(mainDiv);

};

//**************************************************************************

//** deselect

//**************************************************************************

/** Used to update the "selected" state of the button.

this.deselect = function(){

if (mainDiv.selected===true){

mainDiv.selected = false;

setDefaultStyle(mainDiv);

}

};

//**************************************************************************

//** isSelected

//**************************************************************************

/** Returns true if the button is selected (e.g. depressed)

this.isSelected = function(){

return (mainDiv.selected===true);

};

//**************************************************************************

//** toggle

//**************************************************************************

/** Used to toggle the button's selection state.

this.toggle = function(){

if (config.toggle===true){

if (mainDiv.selected===true){

me.deselect();

if (menu) menu.style.visibility = "hidden";

}

else{

me.select();

if (menu) menu.style.visibility = "visible";

}

};

//**************************************************************************

//** getMenuPanel

//**************************************************************************

/** Returns the DOM element associated with the menu panel. Typically, this

* is used to render menu options (i.e. buttons).

this.getMenuPanel = function(){

return menu;

};

//**************************************************************************

//** setDefaultStyle

//**************************************************************************

var setDefaultStyle = function(div){

setStyle(div, "button");

setStyle(icon, "icon");

setStyle(arrow, "arrow");

addLabelPadding();

};

//**************************************************************************

//** setHoverStyle

//**************************************************************************

var setHoverStyle = function(div){

addStyle(div, "hover");

addStyle(icon, "iconHover");

addStyle(arrow, "arrowHover");

addLabelPadding();

};

//**************************************************************************

//** setSelectStyle

//**************************************************************************

var setSelectStyle = function(div){

addStyle(div, "select");

addStyle(icon, "iconSelect");

addStyle(arrow, "arrowSelect");

addLabelPadding();

};

//**************************************************************************

//** addLabelPadding

//**************************************************************************

var addLabelPadding = function(){

if (icon.isVisible()){

var str = me.getLabel();

if (!(typeof str === 'undefined' || str===null || str.length===0)){

if (config.iconAlign==="left"){

icon.style.marginRight = config.iconPadding;

}

else{

icon.style.marginLeft = config.iconPadding;

}

};

//**************************************************************************

//** Utils

//**************************************************************************

var merge = javaxt.dhtml.utils.merge;

var createTable = javaxt.dhtml.utils.createTable;

var createElement = javaxt.dhtml.utils.createElement;

var addShowHide = javaxt.dhtml.utils.addShowHide;

var setStyle = function(el, style){

javaxt.dhtml.utils.setStyle(el, config.style[style]);

};

var addStyle = function(el, style){

javaxt.dhtml.utils.addStyle(el, config.style[style]);

};

init();

};

javaxt-webcontrols/src/button/Button.js at dev · javaxt-project/javaxt-webcontrols · GitHub

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