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isteven-multi-select.js
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/*
* Angular JS Multi Select
* Creates a dropdown-like button with checkboxes.
*
* Project started on: Tue, 14 Jan 2014 - 5:18:02 PM
* Current version: 4.0.0
*
* Released under the MIT License
* --------------------------------------------------------------------------------
* The MIT License (MIT)
*
* Copyright (c) 2014 Ignatius Steven (https://github.com/isteven)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
* --------------------------------------------------------------------------------
*/
'use strict'
angular.module( 'isteven-multi-select', ['ng'] ).directive( 'istevenMultiSelect' , [ '$sce', '$timeout', '$templateCache', function ( $sce, $timeout, $templateCache ) {
return {
restrict:
'AE',
scope:
{
// models
inputModel : '=',
outputModel : '=',
// settings based on attribute
isDisabled : '=',
// callbacks
onClear : '&',
onClose : '&',
onSearchChange : '&',
onItemClick : '&',
onOpen : '&',
onReset : '&',
onSelectAll : '&',
onSelectNone : '&',
// i18n
translation : '=',
// caption
caption : '@'
},
/*
* The rest are attributes. They don't need to be parsed / binded, so we can safely access them by value.
* - buttonLabel, directiveId, helperElements, itemLabel, maxLabels, orientation, selectionMode, minSearchLength,
* tickProperty, disableProperty, groupProperty, searchProperty, maxHeight, outputProperties
*/
templateUrl:
'isteven-multi-select.htm',
link: function ( $scope, element, attrs ) {
$scope.backUp = [];
$scope.varButtonLabel = '';
$scope.spacingProperty = '';
$scope.indexProperty = '';
$scope.orientationH = false;
$scope.orientationV = true;
$scope.filteredModel = [];
$scope.inputLabel = { labelFilter: '' };
$scope.tabIndex = 0;
$scope.lang = {};
$scope.helperStatus = {
all : true,
none : true,
reset : true,
filter : true
};
var
prevTabIndex = 0,
helperItems = [],
helperItemsLength = 0,
checkBoxLayer = '',
scrolled = false,
selectedItems = [],
formElements = [],
vMinSearchLength = 0,
clickedItem = null
// v3.0.0
// clear button clicked
$scope.clearClicked = function( e ) {
$scope.inputLabel.labelFilter = '';
$scope.updateFilter();
$scope.select( 'clear', e );
}
// A little hack so that AngularJS ng-repeat can loop using start and end index like a normal loop
// http://stackoverflow.com/questions/16824853/way-to-ng-repeat-defined-number-of-times-instead-of-repeating-over-array
$scope.numberToArray = function( num ) {
return new Array( num );
}
// Call this function when user type on the filter field
$scope.searchChanged = function() {
if ( $scope.inputLabel.labelFilter.length < vMinSearchLength && $scope.inputLabel.labelFilter.length > 0 ) {
return false;
}
$scope.updateFilter();
}
$scope.updateFilter = function()
{
// we check by looping from end of input-model
$scope.filteredModel = [];
var i = 0;
if ( typeof $scope.inputModel === 'undefined' ) {
return false;
}
for( i = $scope.inputModel.length - 1; i >= 0; i-- ) {
// if it's group end, we push it to filteredModel[];
if ( typeof $scope.inputModel[ i ][ attrs.groupProperty ] !== 'undefined' && $scope.inputModel[ i ][ attrs.groupProperty ] === false ) {
$scope.filteredModel.push( $scope.inputModel[ i ] );
}
// if it's data
var gotData = false;
if ( typeof $scope.inputModel[ i ][ attrs.groupProperty ] === 'undefined' ) {
// If we set the search-key attribute, we use this loop.
if ( typeof attrs.searchProperty !== 'undefined' && attrs.searchProperty !== '' ) {
for (var key in $scope.inputModel[ i ] ) {
if (
typeof $scope.inputModel[ i ][ key ] !== 'boolean'
&& String( $scope.inputModel[ i ][ key ] ).toUpperCase().indexOf( $scope.inputLabel.labelFilter.toUpperCase() ) >= 0
&& attrs.searchProperty.indexOf( key ) > -1
) {
gotData = true;
break;
}
}
}
// if there's no search-key attribute, we use this one. Much better on performance.
else {
for ( var key in $scope.inputModel[ i ] ) {
if (
typeof $scope.inputModel[ i ][ key ] !== 'boolean'
&& String( $scope.inputModel[ i ][ key ] ).toUpperCase().indexOf( $scope.inputLabel.labelFilter.toUpperCase() ) >= 0
) {
gotData = true;
break;
}
}
}
if ( gotData === true ) {
// push
$scope.filteredModel.push( $scope.inputModel[ i ] );
}
}
// if it's group start
if ( typeof $scope.inputModel[ i ][ attrs.groupProperty ] !== 'undefined' && $scope.inputModel[ i ][ attrs.groupProperty ] === true ) {
if ( typeof $scope.filteredModel[ $scope.filteredModel.length - 1 ][ attrs.groupProperty ] !== 'undefined'
&& $scope.filteredModel[ $scope.filteredModel.length - 1 ][ attrs.groupProperty ] === false ) {
$scope.filteredModel.pop();
}
else {
$scope.filteredModel.push( $scope.inputModel[ i ] );
}
}
}
$scope.filteredModel.reverse();
$timeout( function() {
$scope.getFormElements();
// Callback: on filter change
if ( $scope.inputLabel.labelFilter.length > vMinSearchLength ) {
var filterObj = [];
angular.forEach( $scope.filteredModel, function( value, key ) {
if ( typeof value !== 'undefined' ) {
if ( typeof value[ attrs.groupProperty ] === 'undefined' ) {
var tempObj = angular.copy( value );
var index = filterObj.push( tempObj );
delete filterObj[ index - 1 ][ $scope.indexProperty ];
delete filterObj[ index - 1 ][ $scope.spacingProperty ];
}
}
});
$scope.onSearchChange({
data:
{
keyword: $scope.inputLabel.labelFilter,
result: filterObj
}
});
}
},0);
};
// List all the input elements. We need this for our keyboard navigation.
// This function will be called everytime the filter is updated.
// Depending on the size of filtered mode, might not good for performance, but oh well..
$scope.getFormElements = function() {
formElements = [];
var
selectButtons = [],
inputField = [],
checkboxes = [],
clearButton = [];
// If available, then get select all, select none, and reset buttons
if ( $scope.helperStatus.all || $scope.helperStatus.none || $scope.helperStatus.reset ) {
selectButtons = element.children().children().next().children().children()[ 0 ].getElementsByTagName( 'button' );
// If available, then get the search box and the clear button
if ( $scope.helperStatus.filter ) {
// Get helper - search and clear button.
inputField = element.children().children().next().children().children().next()[ 0 ].getElementsByTagName( 'input' );
clearButton = element.children().children().next().children().children().next()[ 0 ].getElementsByTagName( 'button' );
}
}
else {
if ( $scope.helperStatus.filter ) {
// Get helper - search and clear button.
inputField = element.children().children().next().children().children()[ 0 ].getElementsByTagName( 'input' );
clearButton = element.children().children().next().children().children()[ 0 ].getElementsByTagName( 'button' );
}
}
// Get checkboxes
if ( !$scope.helperStatus.all && !$scope.helperStatus.none && !$scope.helperStatus.reset && !$scope.helperStatus.filter ) {
checkboxes = element.children().children().next()[ 0 ].getElementsByTagName( 'input' );
}
else {
checkboxes = element.children().children().next().children().next()[ 0 ].getElementsByTagName( 'input' );
}
// Push them into global array formElements[]
for ( var i = 0; i < selectButtons.length ; i++ ) { formElements.push( selectButtons[ i ] ); }
for ( var i = 0; i < inputField.length ; i++ ) { formElements.push( inputField[ i ] ); }
for ( var i = 0; i < clearButton.length ; i++ ) { formElements.push( clearButton[ i ] ); }
for ( var i = 0; i < checkboxes.length ; i++ ) { formElements.push( checkboxes[ i ] ); }
}
// check if an item has attrs.groupProperty (be it true or false)
$scope.isGroupMarker = function( item , type ) {
if ( typeof item[ attrs.groupProperty ] !== 'undefined' && item[ attrs.groupProperty ] === type ) return true;
return false;
}
$scope.removeGroupEndMarker = function( item ) {
if ( typeof item[ attrs.groupProperty ] !== 'undefined' && item[ attrs.groupProperty ] === false ) return false;
return true;
}
// call this function when an item is clicked
$scope.syncItems = function( item, e, ng_repeat_index ) {
e.preventDefault();
e.stopPropagation();
// if the directive is globaly disabled, do nothing
if ( typeof attrs.disableProperty !== 'undefined' && item[ attrs.disableProperty ] === true ) {
return false;
}
// if item is disabled, do nothing
if ( typeof attrs.isDisabled !== 'undefined' && $scope.isDisabled === true ) {
return false;
}
// if end group marker is clicked, do nothing
if ( typeof item[ attrs.groupProperty ] !== 'undefined' && item[ attrs.groupProperty ] === false ) {
return false;
}
var index = $scope.filteredModel.indexOf( item );
// if the start of group marker is clicked ( only for multiple selection! )
// how it works:
// - if, in a group, there are items which are not selected, then they all will be selected
// - if, in a group, all items are selected, then they all will be de-selected
if ( typeof item[ attrs.groupProperty ] !== 'undefined' && item[ attrs.groupProperty ] === true ) {
// this is only for multiple selection, so if selection mode is single, do nothing
if ( typeof attrs.selectionMode !== 'undefined' && attrs.selectionMode.toUpperCase() === 'SINGLE' ) {
return false;
}
var i,j,k;
var startIndex = 0;
var endIndex = $scope.filteredModel.length - 1;
var tempArr = [];
// nest level is to mark the depth of the group.
// when you get into a group (start group marker), nestLevel++
// when you exit a group (end group marker), nextLevel--
var nestLevel = 0;
// we loop throughout the filtered model (not whole model)
for( i = index ; i < $scope.filteredModel.length ; i++) {
// this break will be executed when we're done processing each group
if ( nestLevel === 0 && i > index )
{
break;
}
if ( typeof $scope.filteredModel[ i ][ attrs.groupProperty ] !== 'undefined' && $scope.filteredModel[ i ][ attrs.groupProperty ] === true ) {
// To cater multi level grouping
if ( tempArr.length === 0 ) {
startIndex = i + 1;
}
nestLevel = nestLevel + 1;
}
// if group end
else if ( typeof $scope.filteredModel[ i ][ attrs.groupProperty ] !== 'undefined' && $scope.filteredModel[ i ][ attrs.groupProperty ] === false ) {
nestLevel = nestLevel - 1;
// cek if all are ticked or not
if ( tempArr.length > 0 && nestLevel === 0 ) {
var allTicked = true;
endIndex = i;
for ( j = 0; j < tempArr.length ; j++ ) {
if ( typeof tempArr[ j ][ $scope.tickProperty ] !== 'undefined' && tempArr[ j ][ $scope.tickProperty ] === false ) {
allTicked = false;
break;
}
}
if ( allTicked === true ) {
for ( j = startIndex; j <= endIndex ; j++ ) {
if ( typeof $scope.filteredModel[ j ][ attrs.groupProperty ] === 'undefined' ) {
if ( typeof attrs.disableProperty === 'undefined' ) {
$scope.filteredModel[ j ][ $scope.tickProperty ] = false;
// we refresh input model as well
inputModelIndex = $scope.filteredModel[ j ][ $scope.indexProperty ];
$scope.inputModel[ inputModelIndex ][ $scope.tickProperty ] = false;
}
else if ( $scope.filteredModel[ j ][ attrs.disableProperty ] !== true ) {
$scope.filteredModel[ j ][ $scope.tickProperty ] = false;
// we refresh input model as well
inputModelIndex = $scope.filteredModel[ j ][ $scope.indexProperty ];
$scope.inputModel[ inputModelIndex ][ $scope.tickProperty ] = false;
}
}
}
}
else {
for ( j = startIndex; j <= endIndex ; j++ ) {
if ( typeof $scope.filteredModel[ j ][ attrs.groupProperty ] === 'undefined' ) {
if ( typeof attrs.disableProperty === 'undefined' ) {
$scope.filteredModel[ j ][ $scope.tickProperty ] = true;
// we refresh input model as well
inputModelIndex = $scope.filteredModel[ j ][ $scope.indexProperty ];
$scope.inputModel[ inputModelIndex ][ $scope.tickProperty ] = true;
}
else if ( $scope.filteredModel[ j ][ attrs.disableProperty ] !== true ) {
$scope.filteredModel[ j ][ $scope.tickProperty ] = true;
// we refresh input model as well
inputModelIndex = $scope.filteredModel[ j ][ $scope.indexProperty ];
$scope.inputModel[ inputModelIndex ][ $scope.tickProperty ] = true;
}
}
}
}
}
}
// if data
else {
tempArr.push( $scope.filteredModel[ i ] );
}
}
}
// if an item (not group marker) is clicked
else {
// If it's single selection mode
if ( typeof attrs.selectionMode !== 'undefined' && attrs.selectionMode.toUpperCase() === 'SINGLE' ) {
// first, set everything to false
for( i=0 ; i < $scope.filteredModel.length ; i++) {
$scope.filteredModel[ i ][ $scope.tickProperty ] = false;
}
for( i=0 ; i < $scope.inputModel.length ; i++) {
$scope.inputModel[ i ][ $scope.tickProperty ] = false;
}
// then set the clicked item to true
$scope.filteredModel[ index ][ $scope.tickProperty ] = true;
}
// Multiple
else {
$scope.filteredModel[ index ][ $scope.tickProperty ] = !$scope.filteredModel[ index ][ $scope.tickProperty ];
}
// we refresh input model as well
var inputModelIndex = $scope.filteredModel[ index ][ $scope.indexProperty ];
$scope.inputModel[ inputModelIndex ][ $scope.tickProperty ] = $scope.filteredModel[ index ][ $scope.tickProperty ];
}
// we execute the callback function here
clickedItem = angular.copy( item );
if ( clickedItem !== null ) {
$timeout( function() {
delete clickedItem[ $scope.indexProperty ];
delete clickedItem[ $scope.spacingProperty ];
$scope.onItemClick( { data: clickedItem } );
clickedItem = null;
}, 0 );
}
$scope.refreshOutputModel();
$scope.refreshButton();
// We update the index here
prevTabIndex = $scope.tabIndex;
$scope.tabIndex = ng_repeat_index + helperItemsLength;
// Set focus on the hidden checkbox
e.target.focus();
// set & remove CSS style
$scope.removeFocusStyle( prevTabIndex );
$scope.setFocusStyle( $scope.tabIndex );
if ( typeof attrs.selectionMode !== 'undefined' && attrs.selectionMode.toUpperCase() === 'SINGLE' ) {
// on single selection mode, we then hide the checkbox layer
$scope.toggleCheckboxes( e );
}
}
// update $scope.outputModel
$scope.refreshOutputModel = function() {
$scope.outputModel = [];
var
outputProps = [],
tempObj = {};
// v4.0.0
if ( typeof attrs.outputProperties !== 'undefined' ) {
outputProps = attrs.outputProperties.split(' ');
angular.forEach( $scope.inputModel, function( value, key ) {
if (
typeof value !== 'undefined'
&& typeof value[ attrs.groupProperty ] === 'undefined'
&& value[ $scope.tickProperty ] === true
) {
tempObj = {};
angular.forEach( value, function( value1, key1 ) {
if ( outputProps.indexOf( key1 ) > -1 ) {
tempObj[ key1 ] = value1;
}
});
var index = $scope.outputModel.push( tempObj );
delete $scope.outputModel[ index - 1 ][ $scope.indexProperty ];
delete $scope.outputModel[ index - 1 ][ $scope.spacingProperty ];
}
});
}
else {
angular.forEach( $scope.inputModel, function( value, key ) {
if (
typeof value !== 'undefined'
&& typeof value[ attrs.groupProperty ] === 'undefined'
&& value[ $scope.tickProperty ] === true
) {
var temp = angular.copy( value );
var index = $scope.outputModel.push( temp );
delete $scope.outputModel[ index - 1 ][ $scope.indexProperty ];
delete $scope.outputModel[ index - 1 ][ $scope.spacingProperty ];
}
});
}
}
// refresh button label
$scope.refreshButton = function() {
$scope.varButtonLabel = $sce.trustAsHtml(($scope.caption || '' ) + '<span class="caret"></span>' );
}
// Check if a checkbox is disabled or enabled. It will check the granular control (disableProperty) and global control (isDisabled)
// Take note that the granular control has higher priority.
$scope.itemIsDisabled = function( item ) {
if ( typeof attrs.disableProperty !== 'undefined' && item[ attrs.disableProperty ] === true ) {
return true;
}
else {
if ( $scope.isDisabled === true ) {
return true;
}
else {
return false;
}
}
}
// A simple function to parse the item label settings. Used on the buttons and checkbox labels.
$scope.writeLabel = function( item, type ) {
// type is either 'itemLabel' or 'buttonLabel'
var temp = attrs[ type ].split( ' ' );
var label = '';
angular.forEach( temp, function( value, key ) {
item[ value ] && ( label += ' ' + value.split( '.' ).reduce( function( prev, current ) {
return prev[ current ];
}, item ));
});
if ( type.toUpperCase() === 'BUTTONLABEL' ) {
return label;
}
return $sce.trustAsHtml( label );
}
// UI operations to show/hide checkboxes based on click event..
$scope.toggleCheckboxes = function( e ) {
// We grab the button
var clickedEl = element.children()[0];
// Just to make sure.. had a bug where key events were recorded twice
angular.element( document ).off( 'click', $scope.externalClickListener );
angular.element( document ).off( 'keydown', $scope.keyboardListener );
// The idea below was taken from another multi-select directive - https://github.com/amitava82/angular-multiselect
// His version is awesome if you need a more simple multi-select approach.
// close
if ( angular.element( checkBoxLayer ).hasClass( 'show' )) {
angular.element( checkBoxLayer ).removeClass( 'show' );
angular.element( clickedEl ).removeClass( 'buttonClicked' );
angular.element( document ).off( 'click', $scope.externalClickListener );
angular.element( document ).off( 'keydown', $scope.keyboardListener );
// clear the focused element;
$scope.removeFocusStyle( $scope.tabIndex );
if ( typeof formElements[ $scope.tabIndex ] !== 'undefined' ) {
formElements[ $scope.tabIndex ].blur();
}
// close callback
$timeout( function() {
$scope.onClose();
}, 0 );
// set focus on button again
element.children().children()[ 0 ].focus();
}
// open
else
{
// clear filter
$scope.inputLabel.labelFilter = '';
$scope.updateFilter();
helperItems = [];
helperItemsLength = 0;
angular.element( checkBoxLayer ).addClass( 'show' );
angular.element( clickedEl ).addClass( 'buttonClicked' );
// Attach change event listener on the input filter.
// We need this because ng-change is apparently not an event listener.
angular.element( document ).on( 'click', $scope.externalClickListener );
angular.element( document ).on( 'keydown', $scope.keyboardListener );
// to get the initial tab index, depending on how many helper elements we have.
// priority is to always focus it on the input filter
$scope.getFormElements();
$scope.tabIndex = 0;
var helperContainer = angular.element( element[ 0 ].querySelector( '.helperContainer' ) )[0];
if ( typeof helperContainer !== 'undefined' ) {
for ( var i = 0; i < helperContainer.getElementsByTagName( 'BUTTON' ).length ; i++ ) {
helperItems[ i ] = helperContainer.getElementsByTagName( 'BUTTON' )[ i ];
}
helperItemsLength = helperItems.length + helperContainer.getElementsByTagName( 'INPUT' ).length;
}
// focus on the filter element on open.
if ( element[ 0 ].querySelector( '.inputFilter' ) ) {
element[ 0 ].querySelector( '.inputFilter' ).focus();
$scope.tabIndex = $scope.tabIndex + helperItemsLength - 2;
// blur button in vain
angular.element( element ).children()[ 0 ].blur();
}
// if there's no filter then just focus on the first checkbox item
else {
if ( !$scope.isDisabled ) {
$scope.tabIndex = $scope.tabIndex + helperItemsLength;
if ( $scope.inputModel.length > 0 ) {
formElements[ $scope.tabIndex ].focus();
$scope.setFocusStyle( $scope.tabIndex );
// blur button in vain
angular.element( element ).children()[ 0 ].blur();
}
}
}
// open callback
$scope.onOpen();
}
}
// handle clicks outside the button / multi select layer
$scope.externalClickListener = function( e ) {
var targetsArr = element.find( e.target.tagName );
for (var i = 0; i < targetsArr.length; i++) {
if ( e.target == targetsArr[i] ) {
return;
}
}
angular.element( checkBoxLayer.previousSibling ).removeClass( 'buttonClicked' );
angular.element( checkBoxLayer ).removeClass( 'show' );
angular.element( document ).off( 'click', $scope.externalClickListener );
angular.element( document ).off( 'keydown', $scope.keyboardListener );
// close callback
$timeout( function() {
$scope.onClose();
}, 0 );
// set focus on button again
element.children().children()[ 0 ].focus();
}
// select All / select None / reset buttons
$scope.select = function( type, e ) {
var helperIndex = helperItems.indexOf( e.target );
$scope.tabIndex = helperIndex;
switch( type.toUpperCase() ) {
case 'ALL':
angular.forEach( $scope.filteredModel, function( value, key ) {
if ( typeof value !== 'undefined' && value[ attrs.disableProperty ] !== true ) {
if ( typeof value[ attrs.groupProperty ] === 'undefined' ) {
value[ $scope.tickProperty ] = true;
}
}
});
$scope.refreshOutputModel();
$scope.refreshButton();
$scope.onSelectAll();
break;
case 'NONE':
angular.forEach( $scope.filteredModel, function( value, key ) {
if ( typeof value !== 'undefined' && value[ attrs.disableProperty ] !== true ) {
if ( typeof value[ attrs.groupProperty ] === 'undefined' ) {
value[ $scope.tickProperty ] = false;
}
}
});
$scope.refreshOutputModel();
$scope.refreshButton();
$scope.onSelectNone();
break;
case 'RESET':
angular.forEach( $scope.filteredModel, function( value, key ) {
if ( typeof value[ attrs.groupProperty ] === 'undefined' && typeof value !== 'undefined' && value[ attrs.disableProperty ] !== true ) {
var temp = value[ $scope.indexProperty ];
value[ $scope.tickProperty ] = $scope.backUp[ temp ][ $scope.tickProperty ];
}
});
$scope.refreshOutputModel();
$scope.refreshButton();
$scope.onReset();
break;
case 'CLEAR':
$scope.tabIndex = $scope.tabIndex + 1;
$scope.onClear();
break;
case 'FILTER':
$scope.tabIndex = helperItems.length - 1;
break;
default:
}
}
// just to create a random variable name
function genRandomString( length ) {
var possible = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
var temp = '';
for( var i=0; i < length; i++ ) {
temp += possible.charAt( Math.floor( Math.random() * possible.length ));
}
return temp;
}
// count leading spaces
$scope.prepareGrouping = function() {
var spacing = 0;
angular.forEach( $scope.filteredModel, function( value, key ) {
value[ $scope.spacingProperty ] = spacing;
if ( value[ attrs.groupProperty ] === true ) {
spacing+=2;
}
else if ( value[ attrs.groupProperty ] === false ) {
spacing-=2;
}
});
}
// prepare original index
$scope.prepareIndex = function() {
var ctr = 0;
angular.forEach( $scope.filteredModel, function( value, key ) {
value[ $scope.indexProperty ] = ctr;
ctr++;
});
}
// navigate using up and down arrow
$scope.keyboardListener = function( e ) {
var key = e.keyCode ? e.keyCode : e.which;
var isNavigationKey = false;
// ESC key (close)
if ( key === 27 ) {
e.preventDefault();
e.stopPropagation();
$scope.toggleCheckboxes( e );
}
// next element ( tab, down & right key )
else if ( key === 40 || key === 39 || ( !e.shiftKey && key == 9 ) ) {
isNavigationKey = true;
prevTabIndex = $scope.tabIndex;
$scope.tabIndex++;
if ( $scope.tabIndex > formElements.length - 1 ) {
$scope.tabIndex = 0;
prevTabIndex = formElements.length - 1;
}
while ( formElements[ $scope.tabIndex ].disabled === true ) {
$scope.tabIndex++;
if ( $scope.tabIndex > formElements.length - 1 ) {
$scope.tabIndex = 0;
}
if ( $scope.tabIndex === prevTabIndex ) {
break;
}
}
}
// prev element ( shift+tab, up & left key )
else if ( key === 38 || key === 37 || ( e.shiftKey && key == 9 ) ) {
isNavigationKey = true;
prevTabIndex = $scope.tabIndex;
$scope.tabIndex--;
if ( $scope.tabIndex < 0 ) {
$scope.tabIndex = formElements.length - 1;
prevTabIndex = 0;
}
while ( formElements[ $scope.tabIndex ].disabled === true ) {
$scope.tabIndex--;
if ( $scope.tabIndex === prevTabIndex ) {
break;
}
if ( $scope.tabIndex < 0 ) {
$scope.tabIndex = formElements.length - 1;
}
}
}
if ( isNavigationKey === true ) {
e.preventDefault();
// set focus on the checkbox
formElements[ $scope.tabIndex ].focus();
var actEl = document.activeElement;
if ( actEl.type.toUpperCase() === 'CHECKBOX' ) {
$scope.setFocusStyle( $scope.tabIndex );
$scope.removeFocusStyle( prevTabIndex );
}
else {
$scope.removeFocusStyle( prevTabIndex );
$scope.removeFocusStyle( helperItemsLength );
$scope.removeFocusStyle( formElements.length - 1 );
}
}
isNavigationKey = false;
}
// set (add) CSS style on selected row
$scope.setFocusStyle = function( tabIndex ) {
angular.element( formElements[ tabIndex ] ).parent().parent().parent().addClass( 'multiSelectFocus' );
}
// remove CSS style on selected row
$scope.removeFocusStyle = function( tabIndex ) {
angular.element( formElements[ tabIndex ] ).parent().parent().parent().removeClass( 'multiSelectFocus' );
}
/*********************
*********************
*
* 1) Initializations
*
*********************
*********************/
// attrs to $scope - attrs-$scope - attrs - $scope
// Copy some properties that will be used on the template. They need to be in the $scope.
$scope.groupProperty = attrs.groupProperty;
$scope.tickProperty = attrs.tickProperty;
$scope.directiveId = attrs.directiveId;
// Unfortunately I need to add these grouping properties into the input model
var tempStr = genRandomString( 5 );
$scope.indexProperty = 'idx_' + tempStr;
$scope.spacingProperty = 'spc_' + tempStr;
// set orientation css
if ( typeof attrs.orientation !== 'undefined' ) {
if ( attrs.orientation.toUpperCase() === 'HORIZONTAL' ) {
$scope.orientationH = true;
$scope.orientationV = false;
}
else
{
$scope.orientationH = false;
$scope.orientationV = true;
}
}
// get elements required for DOM operation
checkBoxLayer = element.children().children().next()[0];
// set max-height property if provided
if ( typeof attrs.maxHeight !== 'undefined' ) {
var layer = element.children().children().children()[0];
angular.element( layer ).attr( "style", "height:" + attrs.maxHeight + "; overflow-y:scroll;" );
}
// some flags for easier checking
for ( var property in $scope.helperStatus ) {
if ( $scope.helperStatus.hasOwnProperty( property )) {
if (
typeof attrs.helperElements !== 'undefined'
&& attrs.helperElements.toUpperCase().indexOf( property.toUpperCase() ) === -1
) {
$scope.helperStatus[ property ] = false;
}
}
}
if ( typeof attrs.selectionMode !== 'undefined' && attrs.selectionMode.toUpperCase() === 'SINGLE' ) {
$scope.helperStatus[ 'all' ] = false;
$scope.helperStatus[ 'none' ] = false;
}
// helper button icons.. I guess you can use html tag here if you want to.
$scope.icon = {};
$scope.icon.selectAll = '✓'; // a tick icon
$scope.icon.selectNone = '×'; // x icon
$scope.icon.reset = '↶'; // undo icon
// this one is for the selected items
$scope.icon.tickMark = '✓'; // a tick icon
// configurable button labels
if ( typeof attrs.translation !== 'undefined' ) {
$scope.lang.selectAll = $sce.trustAsHtml( $scope.icon.selectAll + ' ' + $scope.translation.selectAll );
$scope.lang.selectNone = $sce.trustAsHtml( $scope.icon.selectNone + ' ' + $scope.translation.selectNone );
$scope.lang.reset = $sce.trustAsHtml( $scope.icon.reset + ' ' + $scope.translation.reset );
$scope.lang.search = $scope.translation.search;
}
else {
$scope.lang.selectAll = $sce.trustAsHtml( $scope.icon.selectAll + ' Select All' );
$scope.lang.selectNone = $sce.trustAsHtml( $scope.icon.selectNone + ' Select None' );
$scope.lang.reset = $sce.trustAsHtml( $scope.icon.reset + ' Reset' );
$scope.lang.search = 'Search...';
}
$scope.icon.tickMark = $sce.trustAsHtml( $scope.icon.tickMark );
// min length of keyword to trigger the filter function
if ( typeof attrs.MinSearchLength !== 'undefined' && parseInt( attrs.MinSearchLength ) > 0 ) {
vMinSearchLength = Math.floor( parseInt( attrs.MinSearchLength ) );
}
/*******************************************************
*******************************************************
*
* 2) Logic starts here, initiated by watch 1 & watch 2
*
*******************************************************
*******************************************************/
// watch1, for changes in input model property
// updates multi-select when user select/deselect a single checkbox programatically
// https://github.com/isteven/angular-multi-select/issues/8
$scope.$watch( 'inputModel' , function( newVal ) {
if ( newVal ) {
$scope.refreshOutputModel();
$scope.refreshButton();
}
}, true );
// watch2 for changes in input model as a whole
// this on updates the multi-select when a user load a whole new input-model. We also update the $scope.backUp variable
$scope.$watch( 'inputModel' , function( newVal ) {
if ( newVal ) {
$scope.backUp = angular.copy( $scope.inputModel );
$scope.updateFilter();
$scope.prepareGrouping();
$scope.prepareIndex();
$scope.refreshOutputModel();
$scope.refreshButton();
}
});
// watch for changes in directive state (disabled or enabled)
$scope.$watch( 'isDisabled' , function( newVal ) {
$scope.isDisabled = newVal;
});
// this is for touch enabled devices. We don't want to hide checkboxes on scroll.
var onTouchStart = function( e ) {
$scope.$apply( function() {
$scope.scrolled = false;
});
};
angular.element( document ).bind( 'touchstart', onTouchStart);
var onTouchMove = function( e ) {
$scope.$apply( function() {
$scope.scrolled = true;
});
};
angular.element( document ).bind( 'touchmove', onTouchMove);
// unbind document events to prevent memory leaks
$scope.$on( '$destroy', function () {
angular.element( document ).unbind( 'touchstart', onTouchStart);
angular.element( document ).unbind( 'touchmove', onTouchMove);
});
}
}
}]).run( [ '$templateCache' , function( $templateCache ) {
var template =
'<span class="multiSelect inlineBlock">' +
// main button
'<button id="{{directiveId}}" type="button"' +
'ng-click="toggleCheckboxes( $event ); refreshSelectedItems(); refreshButton(); prepareGrouping; prepareIndex();"' +
'ng-bind-html="varButtonLabel"' +
'ng-disabled="disable-button"' +
'>' +
'</button>' +