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jsacx-widgets.js
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jsacx-widgets.js
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var acx = window.acx || {};
/**
* acx.ut namespace for small (non-stateful) templates
* @namespace
*/
acx.ut = {};
acx.ut.option_template = function(v) { return { tag: "OPTION", value: v, text: v }; };
acx.ut.require_template = function(f) { return f.require ? { tag: "SPAN", cls: "require", text: "*" } : null; };
/**
* acx.ux namespace for interface enhancements
* @namespace
*/
acx.ux = {};
/**
* a class for generating custom events in widgets
*/
acx.ux.Observable = acx.Class.extend((function() {
function getObs(type) { return ( this.observers[type] || ( this.observers[type] = [] ) ); }
function toLower(a) { return a.toLowerCase(); }
return {
init: function() {
this.observers = {};
for(var opt in this.config) { // automatically install observers that are defined in the configuration
if(opt.indexOf('on') === 0) {
this.on(opt.substring(2).replace(/^[A-Z]/, toLower ), this.config[opt]);
}
}
},
on: function(type, fn, params, thisp) { // on: synonymous with addEvent, addObserver, subscribe
getObs.call(this, type).push( { cb : fn, args : params || [] , cx : thisp || this } );
return this; // make observable functions chainable
},
fire: function(type) { // fire: synonymous with fireEvent, observe, publish
var params = Array.prototype.slice.call(arguments, 1);
getObs.call(this, type).slice().forEach(function(ob) {
ob.cb.apply(ob.cx, ob.args.concat(params));
});
return this; // make observable functions chainable
},
removeAllObservers: function() {
this.observers = {};
},
removeObserver: function(type, fn) {
var obs = getObs.call(this, type), index = obs.reduce( function(p, t, i) { return (t.cb === fn) ? i : p; }, -1 );
if(index !== -1) {
obs.splice(index, 1);
}
return this; // make observable functions chainable
},
hasObserver: function(type) {
return !!getObs.call(this, type).length;
}
};
})());
/**
* Provides drag and drop functionality<br>
* a DragDrop instance is created for each usage pattern and then used over and over again<br>
* first a dragObj is defined - this is the jquery node that will be dragged around<br>
* second, the event callbacks are defined - these allow you control the ui during dragging and run functions when successfully dropping<br>
* thirdly drop targets are defined - this is a list of DOM nodes, the constructor works in one of two modes:
* <li>without targets - objects can be picked up and dragged around, dragStart and dragStop events fire</li>
* <li>with targets - as objects are dragged over targets dragOver, dragOut and DragDrop events fire
* to start dragging call the DragDrop.pickup_handler() function, dragging stops when the mouse is released.
* @constructor
* The following options are supported
* <dt>targetSelector</dt>
* <dd>an argument passed directly to jquery to create a list of targets, as such it can be a CSS style selector, or an array of DOM nodes<br>if target selector is null the DragDrop does Drag only and will not fire dragOver dragOut and dragDrop events</dd>
* <dt>pickupSelector</dt>
* <dd>a jquery selector. The pickup_handler is automatically bound to matched elements (eg clicking on these elements starts the drag). if pickupSelector is null, the pickup_handler must be manually bound <code>$(el).bind("mousedown", dragdrop.pickup_handler)</code></dd>
* <dt>dragObj</dt>
* <dd>the jQuery element to drag around when pickup is called. If not defined, dragObj must be set in onDragStart</dd>
* <dt>draggingClass</dt>
* <dd>the class(es) added to items when they are being dragged</dd>
* The following observables are supported
* <dt>dragStart</dt>
* <dd>a callback when start to drag<br><code>function(jEv)</code></dd>
* <dt>dragOver</dt>
* <dd>a callback when we drag into a target<br><code>function(jEl)</code></dd>
* <dt>dragOut</dt>
* <dd>a callback when we drag out of a target, or when we drop over a target<br><code>function(jEl)</code></dd>
* <dt>dragDrop</dt>
* <dd>a callback when we drop on a target<br><code>function(jEl)</code></dd>
* <dt>dragStop</dt>
* <dd>a callback when we stop dragging<br><code>function(jEv)</code></dd>
*/
acx.ux.DragDrop = acx.ux.Observable.extend({
defaults : {
targetsSelector : null,
pickupSelector: null,
dragObj : null,
draggingClass : "dragging"
},
init: function(options) {
this._super(); // call the class initialiser
this.drag_handler = this.drag.bind(this);
this.drop_handler = this.drop.bind(this);
this.pickup_handler = this.pickup.bind(this);
this.targets = [];
this.dragObj = null;
this.dragObjOffset = null;
this.currentTarget = null;
if(this.config.pickupSelector) {
$(this.config.pickupSelector).bind("mousedown", this.pickup_handler);
}
},
drag : function(jEv) {
jEv.preventDefault();
var mloc = acx.vector(jEv.pageX, jEv.pageY);
this.dragObj.css(mloc.add(this.dragObjOffset).asOffset());
if(this.targets.length === 0) {
return;
}
if(this.currentTarget !== null && mloc.within(this.currentTarget[1], this.currentTarget[2])) {
return;
}
if(this.currentTarget !== null) {
this.fire('dragOut', this.currentTarget[0]);
this.currentTarget = null;
}
for(var i = 0; i < this.targets.length; i++) {
if(mloc.within(this.targets[i][1], this.targets[i][2])) {
this.currentTarget = this.targets[i];
break;
}
}
if(this.currentTarget !== null) {
this.fire('dragOver', this.currentTarget[0]);
}
},
drop : function(jEv) {
$(document).unbind("mousemove", this.drag_handler);
$(document).unbind("mouseup", this.drop_handler);
this.dragObj.removeClass(this.config.draggingClass);
if(this.currentTarget !== null) {
this.fire('dragOut', this.currentTarget[0]);
this.fire('dragDrop', this.currentTarget[0]);
}
this.fire('dragStop', jEv);
this.dragObj = null;
},
pickup : function(jEv, opts) {
acx.extend(this.config, opts);
this.fire('dragStart', jEv);
this.dragObj = this.dragObj || this.config.dragObj;
this.dragObjOffset = this.config.dragObjOffset || acx.vector(this.dragObj.offset()).sub(jEv.pageX, jEv.pageY);
this.dragObj.addClass(this.config.draggingClass);
if(!this.dragObj.get(0).parentNode || this.dragObj.get(0).parentNode.nodeType === 11) { // 11 = document fragment
$(document.body).append(this.dragObj);
}
if(this.config.targetsSelector) {
this.currentTarget = null;
var targets = ( this.targets = [] );
// create an array of elements optimised for rapid collision detection calculation
$(this.config.targetsSelector).each(function(i, el) {
var jEl = $(el);
var tl = acx.vector(jEl.offset());
var br = tl.add(jEl.width(), jEl.height());
targets.push([jEl, tl, br]);
});
}
$(document).bind("mousemove", this.drag_handler);
$(document).bind("mouseup", this.drop_handler);
this.drag_handler(jEv);
}
});
/**
* acx.ui namespace for widget components
* @namespace
*/
acx.ui = {};
/**
* base class for all widgets
* provides: base element definition, automatic observable creation, bound function handlers
* @constructor
*/
acx.ui.Widget = acx.ux.Observable.extend({
defaults : {
id: null // the id of the widget
},
el: null, // this is the jquery wrapped dom element(s) that is the root of the widget
init: function() {
this._super();
for(var prop in this) { // automatically bind all the event handlers
if(prop.contains("_handler")) {
this[prop] = this[prop].bind(this);
}
}
},
id: function(suffix) {
return this.config.id ? (this.config.id + (suffix ? "-" + suffix : "")) : undefined;
},
appendTo: function(parent) {
if(parent) {
this.el.appendTo(parent);
}
return this;
},
remove: function() {
this.el.remove();
this.removeAllObservers();
return this;
}
});
acx.ui.Toolbar = acx.ui.Widget.extend({
defaults: {
label: "",
left: [],
right: []
},
init: function(parent) {
this._super();
this.el = $(this._main_template());
},
_main_template: function() {
return { tag: "DIV", cls: "uiToolbar", children: [
{ tag: "DIV", cls: "ui-left", children: [
{ tag: "H2", text: this.config.label }
].concat(this.config.left) },
{ tag: "DIV", cls: "ui-right", children: this.config.right }
]};
}
});
/**
* Button widget
*/
acx.ui.Button = acx.ui.Widget.extend({
defaults : {
label: "", // the label text
disabled: false, // create a disabled button
autoDisable: false // automatically disable the button when clicked
},
baseClass: "uiButton",
init: function(parent) {
this._super();
this.el = $(this.button_template())
.bind("click", this.click_handler);
this.config.disabled && this.disable();
this.appendTo(parent);
},
click_handler: function(jEv) {
if(! this.disabled) {
this.fire("click", jEv, this);
this.config.autoDisable && this.disable();
}
},
enable: function() {
this.el.removeClass("disabled");
this.disabled = false;
return this;
},
disable: function(disable) {
if(disable === false) {
return this.enable();
}
this.el.addClass("disabled");
this.disabled = true;
return this;
},
button_template: function() { return (
{ tag: 'BUTTON', type: 'button', id: this.id(), cls: this.baseClass, children: [
{ tag: 'DIV', cls: 'uiButton-content', child:
{ tag: 'DIV', cls: 'uiButton-label', text: this.config.label }
}
] }
); }
});
/**
* base abstract class for all modal panels,
* provides open, close, modal and panel stacking
*/
acx.ui.AbstractPanel = acx.ui.Widget.extend({
defaults: {
body: null, // initial content of the body
modal: true, // create a modal panel - creates a div that blocks interaction with page
height: 'auto', // panel height
width: 400, // panel width (in pixels)
open: false, // show the panel when it is created
parent: 'BODY', // node that panel is attached to
autoRemove: false // remove the panel from the dom and destroy it when the widget is closed
},
shared: { // shared data for all instances of acx.ui.Panel and decendants
stack: [], // array of all open panels
modal: $( { tag: "DIV", id: "uiModal", css: { opacity: 0.2, position: "absolute", top: "0px", left: "0px" } } )
},
init: function() {
this._super();
},
open: function(jEv) {
this.el
.css( { visibility: "hidden" } )
.appendTo( $(this.config.parent) )
.css( this._getPosition(jEv) )
.css( { zIndex: (this.shared.stack.length ? (+this.shared.stack[this.shared.stack.length - 1].el.css("zIndex") + 10) : 100) } )
.css( { visibility: "visible", display: "block" } );
this.shared.stack.remove(this);
this.shared.stack.push(this);
this._setModal();
$(document).bind("keyup", this._close_handler);
this.fire("open", { source: this, event: jEv } );
return this;
},
close: function(jEv) {
var index = this.shared.stack.indexOf(this);
if(index !== -1) {
this.shared.stack.splice(index, 1);
this.el.css( { left: "-2999px" } ); // move the dialog to the left rather than hiding to prevent ie6 rendering artifacts
this._setModal();
this.fire("close", { source: this, event: jEv } );
if(this.config.autoRemove) {
this.remove();
}
}
return this;
},
// close the panel and remove it from the dom, destroying it (you can not reuse the panel after calling remove)
remove: function() {
this.close();
this.fire("remove", { source: this });
this.el.remove();
},
// starting at the top of the stack, find the first panel that wants a modal and put it just underneath, otherwise remove the modal
_setModal: function() {
function docSize() {
var de = document.documentElement;
return acx.browser.msie ? // jquery incorrectly uses offsetHeight/Width for the doc size in IE
acx.vector(Math.max(de.clientWidth, de.scrollWidth), Math.max(de.clientHeight, de.scrollHeight)) : $(document).vSize();
}
for(var stackPtr = this.shared.stack.length - 1; stackPtr >= 0; stackPtr--) {
if(this.shared.stack[stackPtr].config.modal) {
this.shared.modal
.appendTo( document.body )
.css( { zIndex: this.shared.stack[stackPtr].el.css("zIndex") - 5 } )
.css( docSize().asSize() );
return;
}
}
this.shared.modal.remove(); // no panels that want a modal were found
},
_getPosition: function() {
return $(window).vSize() // get the current viewport size
.sub(this.el.vSize()) // subtract the size of the panel
.mod(function(s) { return s / 2; }) // divide by 2 (to center it)
.add($(document).vScroll()) // add the current scroll offset
.mod(function(s) { return Math.max(5, s); }) // make sure the panel is not off the edge of the window
.asOffset(); // and return it as a {top, left} object
},
_close_handler: function(jEv) {
if(jEv.type === "keyup" && jEv.keyCode !== 27) { return; } // press esc key to close
$(document).unbind("keyup", this._close_handler);
this.close(jEv);
}
});
/**
* An acx.ui.AbstractPanel that adds a title bar, close box and drag functionality
*/
acx.ui.DraggablePanel = acx.ui.AbstractPanel.extend({
defaults: {
// title: "" // (required) text for the panel title
},
init: function() {
this._super();
this.body = $(this._body_template());
this.title = $(this._title_template());
this.el = $( this._main_template() );
this.el.css( { width: this.config.width } );
this.dd = new acx.ux.DragDrop({
pickupSelector: this.el.find(".uiPanel-titleBar"),
dragObj: this.el
});
// open the panel if set in configuration
this.config.open && this.open();
},
theme: "",
setBody: function(body) {
this.body.empty().append(body);
},
_body_template: function() { return { tag: "DIV", cls: "uiPanel-body", css: { height: this.config.height + (this.config.height === 'auto' ? "" : "px" ) }, child: this.config.body }; },
_title_template: function() { return { tag: "SPAN", cls: "uiPanel-title", text: this.config.title }; },
_main_template: function() { return (
{ tag: "DIV", id: this.id(), cls: "uiPanel " + this.theme, children: [
{ tag: "DIV", cls: "uiPanel-titleBar", children: [
{ tag: "DIV", cls: "uiPanel-close", onclick: this._close_handler, text: "x" },
this.title
]},
this.body
] }
); }
});
acx.ui.InfoPanel = acx.ui.DraggablePanel.extend({
theme: "dark"
});
acx.ui.DialogPanel = acx.ui.DraggablePanel.extend({
_commit_handler: function(jEv) {
this.fire("commit", this, { jEv: jEv });
},
_main_template: function() {
var t = this._super();
t.children.push(this._actionsBar_template());
return t;
},
_actionsBar_template: function() {
return { tag: "DIV", cls: "ui-right", children: [
new acx.ui.Button({ label: "Cancel", onclick: this._close_handler }),
new acx.ui.Button({ label: "OK", onclick: this._commit_handler })
]};
}
});
acx.ui.MenuPanel = acx.ui.AbstractPanel.extend({
defaults: {
items: [], // (required) an array of menu items
modal: false
},
baseClass: "uiMenuPanel",
init: function() {
this._super();
this.el = $(this._main_template());
},
open: function(jEv) {
this._super(jEv);
var cx = this; setTimeout(function() { $(document).bind("click", cx._close_handler); }, 50);
},
_close_handler: function(jEv) {
this._super(jEv);
$(document).unbind("click", this._close_handler);
},
_main_template: function() {
return { tag: "DIV", cls: this.baseClass, children: this.config.items.map(this._menuItem_template, this) };
},
_menuItem_template: function(item) {
var dx = item.disabled ? { onclick: function() {} } : {};
return { tag: "LI", cls: "uiMenuPanel-item" + (item.disabled ? " disabled" : "") + (item.selected ? " selected" : ""), child: acx.extend({ tag: "DIV", cls: "uiMenuPanel-label" }, item, dx ) };
},
_getPosition: function(jEv) {
var parent = $(jEv.target).closest("BUTTON");
return parent.vOffset()
.addY(parent.vSize().y)
.asOffset();
}
});
acx.ui.MenuButton = acx.ui.Button.extend({
defaults: {
menu: null
},
baseClass: "uiButton uiMenuButton",
init: function(parent) {
this._super(parent);
this.menu = this.config.menu;
this.on("click", this.openMenu_handler);
this.menu.on("open", function() { this.el.addClass("active"); }.bind(this));
this.menu.on("close", function() { this.el.removeClass("active"); }.bind(this));
},
openMenu_handler: function(jEv) {
this.menu && this.menu.open(jEv);
}
});
acx.ui.SplitButton = acx.ui.Widget.extend({
defaults: {
items: [],
label: ""
},
baseClass: "uiSplitButton",
init: function( parent ) {
this._super( parent );
this.items = this.config.items.map( function( item ) {
return {
text: item.label,
selected: item.selected,
onclick: function( jEv ) {
var el = $( jEv.target ).closest("LI");
el.parent().children().removeClass("selected");
el.addClass("selected");
this.fire( "select", this, { value: item.value } );
this.value = item.value;
}.bind(this)
};
}, this );
this.value = null;
this.button = new acx.ui.Button({
label: this.config.label,
onclick: function() {
this.fire("click", this, { value: this.value } );
}.bind(this)
});
this.menuButton = new acx.ui.MenuButton({
label: "\u00a0",
menu: new (acx.ui.MenuPanel.extend({
baseClass: "uiSplitMenuPanel uiMenuPanel",
_getPosition: function( jEv ) {
var parent = $(jEv.target).closest("BUTTON");
return parent.vOffset()
.add(parent.vSize())
.addX( -this.el.vOuterSize().x )
.asOffset();
}
}))({
items: this.items
})
});
this.el = $(this._main_template());
},
disable: function() {
this.button.disable();
},
enable: function() {
this.button.enable();
},
_main_template: function() {
return { tag: "DIV", cls: this.baseClass, children: [
this.button, this.menuButton
] };
}
});
/**
* widget for showing tabular data
* @constructor
*/
acx.ui.Table = acx.ui.Widget.extend({
defaults: {
store: null, // (required) implements interface acx.data.DataSourceInterface
height: 0,
width: 0
},
init: function(parent) {
this._super();
this.initElements(parent);
this.config.store.on("data", this._data_handler);
},
appendTo: function(parent) {
if(parent) {
this._super(parent);
this._reflow();
}
},
initElements: function(parent) {
this.el = $(this._main_template());
this.body = this.el.find(".uiTable-body");
this.headers = this.el.find(".uiTable-headers");
this.tools = this.el.find(".uiTable-tools");
this.appendTo(parent);
},
_data_handler: function(store) {
this.tools.text(store.summary);
this.headers.empty().append(this._header_template(store.columns));
this.body.empty().append(this._body_template(store.data, store.columns));
this._reflow();
},
_reflow: function() {
var firstCol = this.body.find("TR:first TH.uiTable-header-cell > DIV"),
headers = this.headers.find("TR:first TH.uiTable-header-cell > DIV");
for(var i = 0; i < headers.length; i++) {
$(headers[i]).width( $(firstCol[i]).width() );
}
this._scroll_handler();
},
_scroll_handler: function(jEv) {
this.el.find(".uiTable-headers").scrollLeft(this.body.scrollLeft());
},
_dataClick_handler: function(jEv) {
var row = $(jEv.target).closest("TR");
if(row.length) {
this.fire("rowClick", this, { row: row } );
}
},
_headerClick_handler: function(jEv) {
var header = $(jEv.target).closest("TH.uiTable-header-cell");
if(header.length) {
this.fire("headerClick", this, { header: header, column: header.data("column"), dir: header.data("dir") });
}
},
_main_template: function() {
return { tag: "DIV", id: this.id(), css: { width: this.config.width + "px" }, cls: "uiTable", children: [
{ tag: "DIV", cls: "uiTable-tools" },
{ tag: "DIV", cls: "uiTable-headers",
onClick: this._headerClick_handler
},
{ tag: "DIV", cls: "uiTable-body",
onClick: this._dataClick_handler,
onScroll: this._scroll_handler,
css: { height: this.config.height + "px", width: this.config.width + "px" }
}
] };
},
_header_template: function(columns) {
var ret = { tag: "TABLE", child: this._headerRow_template(columns) };
ret.child.children.push(this._headerEndCap_template());
return ret;
},
_headerRow_template: function(columns) {
return { tag: "TR", cls: "uiTable-header-row", children: columns.map(function(column) {
var dir = ((this.config.store.sort.column === column) && this.config.store.sort.dir) || "none";
return { tag: "TH", data: { column: column, dir: dir }, cls: "uiTable-header-cell" + ((dir !== "none") ? " uiTable-sort" : ""), children: [
{ tag: "DIV", children: [
{ tag: "DIV", cls: "uiTable-headercell-menu", text: dir === "asc" ? "\u25b2" : "\u25bc" },
{ tag: "DIV", cls: "uiTable-headercell-text", text: column }
]}
]};
}, this)};
},
_headerEndCap_template: function() {
return { tag: "TH", cls: "uiTable-headerEndCap", child: { tag: "DIV" } };
},
_body_template: function(data, columns) {
return { tag: "TABLE", children: []
.concat(this._headerRow_template(columns))
.concat(data.map(function(row) {
return { tag: "TR", data: { row: row }, cls: "uiTable-row", children: columns.map(function(column){
return { tag: "TD", cls: "uiTable-cell", child: { tag: "DIV", text: (row[column] || "").toString() } };
})};
}))
};
}
});