Files
galaxy/static/scripts/mvc/ui.js
T

1085 lines
40 KiB
JavaScript

/**
* functions for creating major ui elements
*/
/**
* backbone model for icon buttons
*/
var IconButton = Backbone.Model.extend({
defaults: {
title : "",
icon_class : "",
on_click : null,
menu_options : null,
is_menu_button : true,
id : null,
href : null,
target : null,
enabled : true,
visible : true,
tooltip_config : {}
}
});
/**
* backbone view for icon buttons
*/
var IconButtonView = Backbone.View.extend({
initialize : function(){
// better rendering this way
this.model.attributes.tooltip_config = { placement : 'bottom' };
this.model.bind( 'change', this.render, this );
},
render : function( ){
// hide tooltip
this.$el.tooltip( 'hide' );
var new_elem = this.template( this.model.toJSON() );
// configure tooltip
new_elem.tooltip( this.model.get( 'tooltip_config' ));
this.$el.replaceWith( new_elem );
this.setElement( new_elem );
return this;
},
events : {
'click' : 'click'
},
click : function( event ){
// if on_click pass to that function
if( _.isFunction( this.model.get( 'on_click' ) ) ){
this.model.get( 'on_click' )( event );
return false;
}
// otherwise, bubble up ( to href or whatever )
return true;
},
// generate html element
template: function( options ){
var buffer = 'title="' + options.title + '" class="icon-button';
if( options.is_menu_button ){
buffer += ' menu-button';
}
buffer += ' ' + options.icon_class;
if( !options.enabled ){
buffer += '_disabled';
}
// close class tag
buffer += '"';
if( options.id ){
buffer += ' id="' + options.id + '"';
}
buffer += ' href="' + options.href + '"';
// add target for href
if( options.target ){
buffer += ' target="' + options.target + '"';
}
// set visibility
if( !options.visible ){
buffer += ' style="display: none;"';
}
// enabled/disabled
if ( options.enabled ){
buffer = '<a ' + buffer + '/>';
} else {
buffer = '<span ' + buffer + '/>';
}
// return element
return $( buffer );
}
} );
// define collection
var IconButtonCollection = Backbone.Collection.extend({
model: IconButton
});
/**
* menu with multiple icon buttons
* views are not needed nor used for individual buttons
*/
var IconButtonMenuView = Backbone.View.extend({
tagName: 'div',
initialize: function(){
this.render();
},
render: function(){
// initialize icon buttons
var self = this;
this.collection.each(function(button){
// create and add icon button to menu
var elt = $('<a/>')
.attr('href', 'javascript:void(0)')
.attr('title', button.attributes.title)
.addClass('icon-button menu-button')
.addClass(button.attributes.icon_class)
.appendTo(self.$el)
.click(button.attributes.on_click);
// configure tooltip
if (button.attributes.tooltip_config){
elt.tooltip(button.attributes.tooltip_config);
}
// add popup menu to icon
var menu_options = button.get('options');
if (menu_options){
make_popupmenu(elt, menu_options);
}
});
// return
return this;
}
});
/**
* Returns an IconButtonMenuView for the provided configuration.
* Configuration is a list of dictionaries where each dictionary
* defines an icon button. Each dictionary must have the following
* elements: icon_class, title, and on_click.
*/
var create_icon_buttons_menu = function(config, global_config)
{
// initialize global configuration
if (!global_config) global_config = {};
// create and initialize menu
var buttons = new IconButtonCollection(
_.map(config, function(button_config){
return new IconButton(_.extend(button_config, global_config));
})
);
// return menu
return new IconButtonMenuView( {collection: buttons} );
};
// =============================================================================
/**
*
*/
var Grid = Backbone.Collection.extend({
});
/**
*
*/
var GridView = Backbone.View.extend({
});
// =============================================================================
/**
* view for a popup menu
*/
var PopupMenu = Backbone.View.extend({
//TODO: maybe better as singleton off the Galaxy obj
/** Cache the desired button element and options, set up the button click handler
* NOTE: attaches this view as HTML/jQ data on the button for later use.
*/
initialize: function( $button, options ){
// default settings
this.$button = $button;
if( !this.$button.size() ){
this.$button = $( '<div/>' );
}
this.options = options || [];
// set up button click -> open menu behavior
var menu = this;
this.$button.click( function( event ){
// if there's already a menu open, remove it
$( '.popmenu-wrapper' ).remove();
menu._renderAndShow( event );
return false;
});
},
// render the menu, append to the page body at the click position, and set up the 'click-away' handlers, show
_renderAndShow: function( clickEvent ){
this.render();
this.$el.appendTo( 'body' ).css( this._getShownPosition( clickEvent )).show();
this._setUpCloseBehavior();
},
// render the menu
// this menu doesn't attach itself to the DOM ( see _renderAndShow )
render: function(){
// render the menu body absolute and hidden, fill with template
this.$el.addClass( 'popmenu-wrapper' ).hide()
.css({ position : 'absolute' })
.html( this.template( this.$button.attr( 'id' ), this.options ));
// set up behavior on each link/anchor elem
if( this.options.length ){
var menu = this;
//precondition: there should be one option per li
this.$el.find( 'li' ).each( function( i, li ){
var option = menu.options[i];
// if the option has 'func', call that function when the anchor is clicked
if( option.func ){
$( this ).children( 'a.popupmenu-option' ).click( function( event ){
option.func.call( menu, event, option );
// bubble up so that an option click will call the close behavior
//return false;
});
}
});
}
return this;
},
template : function( id, options ){
return [
'<ul id="', id, '-menu" class="dropdown-menu">', this._templateOptions( options ), '</ul>'
].join( '' );
},
_templateOptions : function( options ){
if( !options.length ){
return '<li>(no options)</li>';
}
return _.map( options, function( option ){
if( option.divider ){
return '<li class="divider"></li>';
} else if( option.header ){
return [ '<li class="head"><a href="javascript:void(0);">', option.html, '</a></li>' ].join( '' );
}
var href = option.href || 'javascript:void(0);',
target = ( option.target )?( ' target="' + option.target + '"' ):( '' ),
check = ( option.checked )?( '<span class="fa fa-check"></span>' ):( '' );
return [
'<li><a class="popupmenu-option" href="', href, '"', target, '>',
check, option.html,
'</a></li>'
].join( '' );
}).join( '' );
},
// get the absolute position/offset for the menu
_getShownPosition : function( clickEvent ){
// display menu horiz. centered on click...
var menuWidth = this.$el.width();
var x = clickEvent.pageX - menuWidth / 2 ;
// adjust to handle horiz. scroll and window dimensions ( draw entirely on visible screen area )
x = Math.min( x, $( document ).scrollLeft() + $( window ).width() - menuWidth - 5 );
x = Math.max( x, $( document ).scrollLeft() + 5 );
return {
top: clickEvent.pageY,
left: x
};
},
// bind an event handler to all available frames so that when anything is clicked
// the menu is removed from the DOM and the event handler unbinds itself
_setUpCloseBehavior: function(){
var menu = this;
//TODO: alternately: focus hack, blocking overlay, jquery.blockui
// function to close popup and unbind itself
function closePopup( event ){
$( document ).off( 'click.close_popup' );
if( window.parent !== window ){
try {
$( window.parent.document ).off( "click.close_popup" );
} catch( err ){}
} else {
try {
$( 'iframe#galaxy_main' ).contents().off( "click.close_popup" );
} catch( err ){}
}
menu.remove();
}
$( 'html' ).one( "click.close_popup", closePopup );
if( window.parent !== window ){
try {
$( window.parent.document ).find( 'html' ).one( "click.close_popup", closePopup );
} catch( err ){}
} else {
try {
$( 'iframe#galaxy_main' ).contents().one( "click.close_popup", closePopup );
} catch( err ){}
}
},
// add a menu option/item at the given index
addItem: function( item, index ){
// append to end if no index
index = ( index >= 0 ) ? index : this.options.length;
this.options.splice( index, 0, item );
return this;
},
// remove a menu option/item at the given index
removeItem: function( index ){
if( index >=0 ){
this.options.splice( index, 1 );
}
return this;
},
// search for a menu option by it's html
findIndexByHtml: function( html ){
for( var i = 0; i < this.options.length; i++ ){
if( _.has( this.options[i], 'html' ) && ( this.options[i].html === html )){
return i;
}
}
return null;
},
// search for a menu option by it's html
findItemByHtml: function( html ){
return this.options[( this.findIndexByHtml( html ))];
},
// string representation
toString: function(){
return 'PopupMenu';
}
});
/** shortcut to new for when you don't need to preserve the ref */
PopupMenu.create = function _create( $button, options ){
return new PopupMenu( $button, options );
};
// -----------------------------------------------------------------------------
// the following class functions are bridges from the original make_popupmenu and make_popup_menus
// to the newer backbone.js PopupMenu
/** Create a PopupMenu from simple map initial_options activated by clicking button_element.
* Converts initial_options to object array used by PopupMenu.
* @param {jQuery|DOMElement} button_element element which, when clicked, activates menu
* @param {Object} initial_options map of key -> values, where
* key is option text, value is fn to call when option is clicked
* @returns {PopupMenu} the PopupMenu created
*/
PopupMenu.make_popupmenu = function( button_element, initial_options ){
var convertedOptions = [];
_.each( initial_options, function( optionVal, optionKey ){
var newOption = { html: optionKey };
// keys with null values indicate: header
if( optionVal === null ){ // !optionVal? (null only?)
newOption.header = true;
// keys with function values indicate: a menu option
} else if( jQuery.type( optionVal ) === 'function' ){
newOption.func = optionVal;
}
//TODO:?? any other special optionVals?
// there was no divider option originally
convertedOptions.push( newOption );
});
return new PopupMenu( $( button_element ), convertedOptions );
};
/** Find all anchors in $parent (using selector) and covert anchors into a PopupMenu options map.
* @param {jQuery} $parent the element that contains the links to convert to options
* @param {String} selector jq selector string to find links
* @returns {Object[]} the options array to initialize a PopupMenu
*/
//TODO: lose parent and selector, pass in array of links, use map to return options
PopupMenu.convertLinksToOptions = function( $parent, selector ){
$parent = $( $parent );
selector = selector || 'a';
var options = [];
$parent.find( selector ).each( function( elem, i ){
var option = {}, $link = $( elem );
// convert link text to the option text (html) and the href into the option func
option.html = $link.text();
if( $link.attr( 'href' ) ){
var linkHref = $link.attr( 'href' ),
linkTarget = $link.attr( 'target' ),
confirmText = $link.attr( 'confirm' );
option.func = function(){
// if there's a "confirm" attribute, throw up a confirmation dialog, and
// if the user cancels - do nothing
if( ( confirmText ) && ( !confirm( confirmText ) ) ){ return; }
// if there's no confirm attribute, or the user accepted the confirm dialog:
switch( linkTarget ){
// relocate the center panel
case '_parent':
window.parent.location = linkHref;
break;
// relocate the entire window
case '_top':
window.top.location = linkHref;
break;
// relocate this panel
default:
window.location = linkHref;
}
};
}
options.push( option );
});
return options;
};
/** Create a single popupmenu from existing DOM button and anchor elements
* @param {jQuery} $buttonElement the element that when clicked will open the menu
* @param {jQuery} $menuElement the element that contains the anchors to convert into a menu
* @param {String} menuElementLinkSelector jq selector string used to find anchors to be made into menu options
* @returns {PopupMenu} the PopupMenu (Backbone View) that can render, control the menu
*/
PopupMenu.fromExistingDom = function( $buttonElement, $menuElement, menuElementLinkSelector ){
$buttonElement = $( $buttonElement );
$menuElement = $( $menuElement );
var options = PopupMenu.convertLinksToOptions( $menuElement, menuElementLinkSelector );
// we're done with the menu (having converted it to an options map)
$menuElement.remove();
return new PopupMenu( $buttonElement, options );
};
/** Create all popupmenus within a document or a more specific element
* @param {DOMElement} parent the DOM element in which to search for popupmenus to build (defaults to document)
* @param {String} menuSelector jq selector string to find popupmenu menu elements (defaults to "div[popupmenu]")
* @param {Function} buttonSelectorBuildFn the function to build the jq button selector.
* Will be passed $menuElement, parent.
* (Defaults to return '#' + $menuElement.attr( 'popupmenu' ); )
* @returns {PopupMenu[]} array of popupmenus created
*/
PopupMenu.make_popup_menus = function( parent, menuSelector, buttonSelectorBuildFn ){
parent = parent || document;
// orig. Glx popupmenu menus have a (non-std) attribute 'popupmenu'
// which contains the id of the button that activates the menu
menuSelector = menuSelector || 'div[popupmenu]';
// default to (orig. Glx) matching button to menu by using the popupmenu attr of the menu as the id of the button
buttonSelectorBuildFn = buttonSelectorBuildFn || function( $menuElement, parent ){
return '#' + $menuElement.attr( 'popupmenu' );
};
// aggregate and return all PopupMenus
var popupMenusCreated = [];
$( parent ).find( menuSelector ).each( function(){
var $menuElement = $( this ),
$buttonElement = $( parent ).find( buttonSelectorBuildFn( $menuElement, parent ) );
popupMenusCreated.push( PopupMenu.fromDom( $buttonElement, $menuElement ) );
$buttonElement.addClass( 'popup' );
});
return popupMenusCreated;
};
//==============================================================================
var faIconButton = function( options ){
//TODO: move out of global
options = options || {};
options.tooltipConfig = options.tooltipConfig || { placement: 'bottom' };
options.classes = [ 'icon-btn' ].concat( options.classes || [] );
if( options.disabled ){
options.classes.push( 'disabled' );
}
var html = [
'<a class="', options.classes.join( ' ' ), '"',
(( options.title )?( ' title="' + options.title + '"' ):( '' )),
(( !options.disabled && options.target )? ( ' target="' + options.target + '"' ):( '' )),
' href="', (( !options.disabled && options.href )?( options.href ):( 'javascript:void(0);' )), '">',
// could go with something less specific here - like 'html'
'<span class="fa ', options.faIcon, '"></span>',
'</a>'
].join( '' );
var $button = $( html ).tooltip( options.tooltipConfig );
if( _.isFunction( options.onclick ) ){
$button.click( options.onclick );
}
return $button;
};
//==============================================================================
(function(){
/** searchInput: (jQuery plugin)
* Creates a search input, a clear button, and loading indicator
* within the selected node.
*
* When the user either presses return or enters some minimal number
* of characters, a callback is called. Pressing ESC when the input
* is focused will clear the input and call a separate callback.
*/
// contructor
function searchInput( parentNode, options ){
//TODO: consolidate with tool menu functionality, use there
var KEYCODE_ESC = 27,
KEYCODE_RETURN = 13,
$parentNode = $( parentNode ),
firstSearch = true,
defaults = {
initialVal : '',
name : 'search',
placeholder : 'search',
classes : '',
onclear : function(){},
onfirstsearch : null,
onsearch : function( inputVal ){},
minSearchLen : 0,
escWillClear : true,
oninit : function(){}
};
// .................................................................... input rendering and events
// visually clear the search, trigger an event, and call the callback
function clearSearchInput( event ){
//console.debug( this, 'clear' );
var $input = $( this ).parent().children( 'input' );
//console.debug( 'input', $input );
$input.val( '' );
$input.trigger( 'clear:searchInput' );
options.onclear();
}
// search for searchTerms, trigger an event, call the appropo callback (based on whether this is the first)
function search( event, searchTerms ){
//console.debug( this, 'searching', searchTerms );
$( this ).trigger( 'search:searchInput', searchTerms );
if( typeof options.onfirstsearch === 'function' && firstSearch ){
firstSearch = false;
options.onfirstsearch( searchTerms );
} else {
options.onsearch( searchTerms );
}
}
// .................................................................... input rendering and events
function inputTemplate(){
// class search-query is bootstrap 2.3 style that now lives in base.less
return [ '<input type="text" name="', options.name, '" placeholder="', options.placeholder, '" ',
'class="search-query ', options.classes, '" ', '/>' ].join( '' );
}
// the search input that responds to keyboard events and displays the search value
function $input(){
return $( inputTemplate() )
// select all text on a focus
.focus( function( event ){
$( this ).select();
})
// attach behaviors to esc, return if desired, search on some min len string
.keyup( function( event ){
// esc key will clear if desired
if( event.which === KEYCODE_ESC && options.escWillClear ){
clearSearchInput.call( this, event );
} else {
var searchTerms = $( this ).val();
// return key or the search string len > minSearchLen (if not 0) triggers search
if( ( event.which === KEYCODE_RETURN )
|| ( options.minSearchLen && searchTerms.length >= options.minSearchLen ) ){
search.call( this, event, searchTerms );
} else if( !searchTerms.length ){
clearSearchInput.call( this, event );
}
}
})
.val( options.initialVal );
}
// .................................................................... clear button rendering and events
// a button for clearing the search bar, placed on the right hand side
function $clearBtn(){
return $([ '<span class="search-clear fa fa-times-circle" ',
'title="', _l( 'clear search (esc)' ), '"></span>' ].join('') )
.tooltip({ placement: 'bottom' })
.click( function( event ){
clearSearchInput.call( this, event );
});
}
// .................................................................... loadingIndicator rendering
// a button for clearing the search bar, placed on the right hand side
function $loadingIndicator(){
return $([ '<span class="search-loading fa fa-spinner fa-spin" ',
'title="', _l( 'loading...' ), '"></span>' ].join('') )
.hide().tooltip({ placement: 'bottom' });
}
// .................................................................... commands
// visually swap the load, clear buttons
function toggleLoadingIndicator(){
$parentNode.find( '.search-loading' ).toggle();
$parentNode.find( '.search-clear' ).toggle();
}
// .................................................................... init
// string command (not constructor)
if( jQuery.type( options ) === 'string' ){
if( options === 'toggle-loading' ){
toggleLoadingIndicator();
}
return $parentNode;
}
// initial render
if( jQuery.type( options ) === 'object' ){
options = jQuery.extend( true, {}, defaults, options );
}
//NOTE: prepended
return $parentNode.addClass( 'search-input' ).prepend([ $input(), $clearBtn(), $loadingIndicator() ]);
}
// as jq plugin
jQuery.fn.extend({
searchInput : function $searchInput( options ){
return this.each( function(){
return searchInput( this, options );
});
}
});
}());
//==============================================================================
(function(){
/** Multi 'mode' button (or any element really) that changes the html
* contents of itself when clicked. Pass in an ordered list of
* objects with 'html' and (optional) onclick functions.
*
* When clicked in a particular node, the onclick function will
* be called (with the element as this) and the element will
* switch to the next mode, replacing it's html content with
* that mode's html.
*
* If there is no next mode, the element will switch back to
* the first mode.
* @example:
* $( '.myElement' ).modeButton({
* modes : [
* {
* mode: 'bler',
* html: '<h5>Bler</h5>',
* onclick : function(){
* $( 'body' ).css( 'background-color', 'red' );
* }
* },
* {
* mode: 'bloo',
* html: '<h4>Bloo</h4>',
* onclick : function(){
* $( 'body' ).css( 'background-color', 'blue' );
* }
* },
* {
* mode: 'blah',
* html: '<h3>Blah</h3>',
* onclick : function(){
* $( 'body' ).css( 'background-color', 'grey' );
* }
* },
* ]
* });
* $( '.myElement' ).modeButton( 'callModeFn', 'bler' );
*/
function ModeButton( element, options ){
this.currModeIndex = 0;
return this.init( element, options );
}
ModeButton.prototype.DATA_KEY = 'mode-button';
ModeButton.prototype.defaults = {
modes : [
{ mode: 'default' }
]
};
ModeButton.prototype.init = function _init( element, options ){
options = options || {};
this.$element = $( element );
this.options = jQuery.extend( true, {}, this.defaults, options );
var modeButton = this;
this.$element.click( function _ModeButtonClick( event ){
// call the curr mode fn
modeButton.callModeFn();
// inc the curr mode index
modeButton._incModeIndex();
// set the element html
$( this ).html( modeButton.options.modes[ modeButton.currModeIndex ].html );
});
this.currModeIndex = 0;
if( this.options.initialMode ){
this.currModeIndex = this._getModeIndex( this.options.initialMode );
}
return this;
};
ModeButton.prototype._getModeIndex = function __getModeIndex( modeKey ){
for( var i=0; i<this.options.modes.length; i+=1 ){
if( this.options.modes[ i ].mode === modeKey ){ return i; }
}
throw new Error( 'mode not found: ' + modeKey );
};
ModeButton.prototype.getCurrMode = function _getCurrMode(){
return this.options.modes[ this.currModeIndex ];
};
ModeButton.prototype.getMode = function _getMode( modeKey ){
if( !modeKey ){ return this.getCurrMode(); }
return this.options.modes[( this._getModeIndex( modeKey ) )];
};
ModeButton.prototype.hasMode = function _hasMode( modeKey ){
return !!this.getMode( modeKey );
};
ModeButton.prototype.currentMode = function _currentMode(){
return this.options.modes[ this.currModeIndex ];
};
ModeButton.prototype.setMode = function _setMode( newModeKey ){
var newMode = this.getMode( newModeKey );
this.$element.html( newMode.html || null );
return this;
};
ModeButton.prototype._incModeIndex = function __incModeIndex(){
this.currModeIndex += 1;
if( this.currModeIndex >= this.options.modes.length ){
this.currModeIndex = 0;
}
return this;
};
ModeButton.prototype.callModeFn = function _callModeFn( modeKey ){
var modeFn = this.getMode( modeKey ).onclick;
if( modeFn && jQuery.type( modeFn === 'function' ) ){
return modeFn.call( this );
}
return undefined;
};
// as jq plugin
jQuery.fn.extend({
modeButton : function $modeButton( options ){
var nonOptionsArgs = jQuery.makeArray( arguments ).slice( 1 );
//TODO: does map still work with jq multi selection (i.e. $( '.class-for-many-btns' ).modeButton)?
return this.map( function(){
var $this = $( this ),
data = $this.data( 'mode-button' );
if( jQuery.type( options ) === 'object' ){
data = new ModeButton( $this, options );
$this.data( 'mode-button', data );
} else if( data && jQuery.type( options ) === 'string' ){
var fn = data[ options ];
if( jQuery.type( fn ) === 'function' ){
return fn.apply( data, nonOptionsArgs );
}
} else if ( data ){
return data;
}
return this;
});
}
});
}());
//==============================================================================
function LoadingIndicator( $where, options ){
//TODO: move out of global
//TODO: too specific to history panel
var self = this;
// defaults
options = jQuery.extend({
cover : false
}, options || {} );
function render(){
var html = [
'<div class="loading-indicator">',
'<div class="loading-indicator-text">',
'<span class="fa fa-spinner fa-spin fa-lg"></span>',
'<span class="loading-indicator-message">loading...</span>',
'</div>',
'</div>'
].join( '\n' );
var $indicator = $( html ).hide().css( options.css || {
position : 'fixed'
}),
$text = $indicator.children( '.loading-indicator-text' );
if( options.cover ){
$indicator.css({
'z-index' : 2,
top : $where.css( 'top' ),
bottom : $where.css( 'bottom' ),
left : $where.css( 'left' ),
right : $where.css( 'right' ),
opacity : 0.5,
'background-color': 'white',
'text-align': 'center'
});
$text = $indicator.children( '.loading-indicator-text' ).css({
'margin-top' : '20px'
});
} else {
$text = $indicator.children( '.loading-indicator-text' ).css({
margin : '12px 0px 0px 10px',
opacity : '0.85',
color : 'grey'
});
$text.children( '.loading-indicator-message' ).css({
margin : '0px 8px 0px 0px',
'font-style' : 'italic'
});
}
return $indicator;
}
self.show = function( msg, speed, callback ){
msg = msg || 'loading...';
speed = speed || 'fast';
// since position is fixed - we insert as sibling
self.$indicator = render().insertBefore( $where );
self.message( msg );
self.$indicator.fadeIn( speed, callback );
return self;
};
self.message = function( msg ){
self.$indicator.find( 'i' ).text( msg );
};
self.hide = function( speed, callback ){
speed = speed || 'fast';
if( self.$indicator && self.$indicator.size() ){
self.$indicator.fadeOut( speed, function(){
self.$indicator.remove();
if( callback ){ callback(); }
});
} else {
if( callback ){ callback(); }
}
return self;
};
return self;
}
//==============================================================================
/**
* Template function that produces a bootstrap dropdown to replace the
* vanilla HTML select input. Pass in an array of options and an initial selection:
* $( '.my-div' ).append( dropDownSelect( [ 'option1', 'option2' ], 'option2' );
*
* When the user changes the selected option a 'change.dropdown-select' event will
* fire with both the jq event and the new selection text as arguments.
*
* Get the currently selected choice using:
* var userChoice = $( '.my-div .dropdown-select .dropdown-select-selected' ).text();
*
*/
function dropDownSelect( options, selected ){
// replacement for vanilla select element using bootstrap dropdowns instead
selected = selected || (( !_.isEmpty( options ) )?( options[0] ):( '' ));
var $select = $([
'<div class="dropdown-select btn-group">',
'<button type="button" class="btn btn-default">',
'<span class="dropdown-select-selected">' + selected + '</span>',
'</button>',
'</div>'
].join( '\n' ));
// if there's only one option, do not style/create as buttons, dropdown - use simple span
// otherwise, a dropdown displaying the current selection
if( options && options.length > 1 ){
$select.find( 'button' )
.addClass( 'dropdown-toggle' ).attr( 'data-toggle', 'dropdown' )
.append( ' <span class="caret"></span>' );
$select.append([
'<ul class="dropdown-menu" role="menu">',
_.map( options, function( option ){
return [
'<li><a href="javascript:void(0)">', option, '</a></li>'
].join( '' );
}).join( '\n' ),
'</ul>'
].join( '\n' ));
}
// trigger 'change.dropdown-select' when a new selection is made using the dropdown
function selectThis( event ){
var $this = $( this ),
$select = $this.parents( '.dropdown-select' ),
newSelection = $this.text();
$select.find( '.dropdown-select-selected' ).text( newSelection );
$select.trigger( 'change.dropdown-select', newSelection );
}
$select.find( 'a' ).click( selectThis );
return $select;
}
//==============================================================================
(function(){
/**
* Creates a three part bootstrap button group (key, op, value) meant to
* allow the user control of filters (e.g. { key: 'name', op: 'contains', value: 'my_history' })
*
* Each field uses a dropDownSelect (from ui.js) to allow selection
* (with the 'value' field appearing as an input when set to do so).
*
* Any change or update in any of the fields will trigger a 'change.filter-control'
* event which will be passed an object containing those fields (as the example above).
*
* Pass in an array of possible filter objects to control what the user can select.
* Each filter object should have:
* key : generally the attribute name on which to filter something
* ops : an array of 1 or more filter operations (e.g. [ 'is', '<', 'contains', '!=' ])
* values (optional) : an array of possible values for the filter (e.g. [ 'true', 'false' ])
* @example:
* $( '.my-div' ).filterControl({
* filters : [
* { key: 'name', ops: [ 'is exactly', 'contains' ] }
* { key: 'deleted', ops: [ 'is' ], values: [ 'true', 'false' ] }
* ]
* });
* // after initialization, you can prog. get the current value using:
* $( '.my-div' ).filterControl( 'val' )
*
*/
function FilterControl( element, options ){
return this.init( element, options );
}
/** the data key that this object will be stored under in the DOM element */
FilterControl.prototype.DATA_KEY = 'filter-control';
/** parses options, sets up instance vars, and does initial render */
FilterControl.prototype.init = function _init( element, options ){
options = options || { filters: [] };
this.$element = $( element ).addClass( 'filter-control btn-group' );
this.options = jQuery.extend( true, {}, this.defaults, options );
this.currFilter = this.options.filters[0];
return this.render();
};
/** render (or re-render) the controls on the element */
FilterControl.prototype.render = function _render(){
this.$element.empty()
.append([ this._renderKeySelect(), this._renderOpSelect(), this._renderValueInput() ]);
return this;
};
/** render the key dropDownSelect, bind a change event to it, and return it */
FilterControl.prototype._renderKeySelect = function __renderKeySelect(){
var filterControl = this;
var keys = this.options.filters.map( function( filter ){
return filter.key;
});
this.$keySelect = dropDownSelect( keys, this.currFilter.key )
.addClass( 'filter-control-key' )
.on( 'change.dropdown-select', function( event, selection ){
filterControl.currFilter = _.findWhere( filterControl.options.filters, { key: selection });
// when the filter/key changes, re-render the control entirely
filterControl.render()._triggerChange();
});
return this.$keySelect;
};
/** render the op dropDownSelect, bind a change event to it, and return it */
FilterControl.prototype._renderOpSelect = function __renderOpSelect(){
var filterControl = this,
ops = this.currFilter.ops;
//TODO: search for currOp in avail. ops: use that for selected if there; otherwise: first op
this.$opSelect = dropDownSelect( ops, ops[0] )
.addClass( 'filter-control-op' )
.on( 'change.dropdown-select', function( event, selection ){
filterControl._triggerChange();
});
return this.$opSelect;
};
/** render the value control, bind a change event to it, and return it */
FilterControl.prototype._renderValueInput = function __renderValueInput(){
var filterControl = this;
// if a values attribute is prov. on the filter - make this a dropdown; otherwise, use an input
if( this.currFilter.values ){
this.$valueSelect = dropDownSelect( this.currFilter.values, this.currFilter.values[0] )
.on( 'change.dropdown-select', function( event, selection ){
filterControl._triggerChange();
});
} else {
//TODO: allow setting a value type (mainly for which html5 input to use: range, number, etc.)
this.$valueSelect = $( '<input/>' ).addClass( 'form-control' )
.on( 'change', function( event, value ){
filterControl._triggerChange();
});
}
this.$valueSelect.addClass( 'filter-control-value' );
return this.$valueSelect;
};
/** return the current state/setting for the filter as a three key object: key, op, value */
FilterControl.prototype.val = function _val(){
var key = this.$element.find( '.filter-control-key .dropdown-select-selected' ).text(),
op = this.$element.find( '.filter-control-op .dropdown-select-selected' ).text(),
// handle either a dropdown or plain input
$value = this.$element.find( '.filter-control-value' ),
value = ( $value.hasClass( 'dropdown-select' ) )?( $value.find( '.dropdown-select-selected' ).text() )
:( $value.val() );
return { key: key, op: op, value: value };
};
// single point of change for change event
FilterControl.prototype._triggerChange = function __triggerChange(){
this.$element.trigger( 'change.filter-control', this.val() );
};
// as jq plugin
jQuery.fn.extend({
filterControl : function $filterControl( options ){
var nonOptionsArgs = jQuery.makeArray( arguments ).slice( 1 );
return this.map( function(){
var $this = $( this ),
data = $this.data( FilterControl.prototype.DATA_KEY );
if( jQuery.type( options ) === 'object' ){
data = new FilterControl( $this, options );
$this.data( FilterControl.prototype.DATA_KEY, data );
}
if( data && jQuery.type( options ) === 'string' ){
var fn = data[ options ];
if( jQuery.type( fn ) === 'function' ){
return fn.apply( data, nonOptionsArgs );
}
}
return this;
});
}
});
}());