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Diffstat (limited to 'vector/collapsibleTabs.js')
| -rw-r--r-- | vector/collapsibleTabs.js | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/vector/collapsibleTabs.js b/vector/collapsibleTabs.js new file mode 100644 index 0000000..0e49744 --- /dev/null +++ b/vector/collapsibleTabs.js @@ -0,0 +1,208 @@ +/** + * Collapsible tabs jQuery Plugin + */ +( function ( $ ) { + var rtl = $( 'html' ).attr( 'dir' ) === 'rtl'; + $.fn.collapsibleTabs = function ( options ) { + // return if the function is called on an empty jquery object + if ( !this.length ) { + return this; + } + // Merge options into the defaults + var $settings = $.extend( {}, $.collapsibleTabs.defaults, options ); + + this.each( function () { + var $el = $( this ); + // add the element to our array of collapsible managers + $.collapsibleTabs.instances = ( $.collapsibleTabs.instances.length === 0 ? + $el : $.collapsibleTabs.instances.add( $el ) ); + // attach the settings to the elements + $el.data( 'collapsibleTabsSettings', $settings ); + // attach data to our collapsible elements + $el.children( $settings.collapsible ).each( function () { + $.collapsibleTabs.addData( $( this ) ); + } ); + } ); + + // if we haven't already bound our resize handler, bind it now + if ( !$.collapsibleTabs.boundEvent ) { + $( window ).on( 'resize', $.debounce( 500, function () { + $.collapsibleTabs.handleResize(); + } ) ); + $.collapsibleTabs.boundEvent = true; + } + + // call our resize handler to setup the page + $.collapsibleTabs.handleResize(); + return this; + }; + /** + * Returns the amount of horizontal distance between the two tabs groups + * (#left-navigation and #right-navigation), in pixels. If negative, this + * means that the tabs overlap, and the value is the width of overlapping + * parts. + * + * Used in default expandCondition and collapseCondition. + * + * @return {Numeric} distance/overlap in pixels + */ + function calculateTabDistance() { + var $leftTab, $rightTab, leftEnd, rightStart; + + // In RTL, #right-navigation is actually on the left and vice versa. + // Hooray for descriptive naming. + if ( !rtl ) { + $leftTab = $( '#left-navigation' ); + $rightTab = $( '#right-navigation' ); + } else { + $leftTab = $( '#right-navigation' ); + $rightTab = $( '#left-navigation' ); + } + + leftEnd = $leftTab.offset().left + $leftTab.width(); + rightStart = $rightTab.offset().left; + + return rightStart - leftEnd; + } + $.collapsibleTabs = { + instances: [], + boundEvent: null, + defaults: { + expandedContainer: '#p-views ul', + collapsedContainer: '#p-cactions ul', + collapsible: 'li.collapsible', + shifting: false, + expandCondition: function ( eleWidth ) { + // If there are at least eleWidth + 1 pixels of free space, expand. + // We add 1 because .width() will truncate fractional values + // but .offset() will not. + return calculateTabDistance() >= (eleWidth + 1); + }, + collapseCondition: function () { + // If there's an overlap, collapse. + return calculateTabDistance() < 0; + } + }, + addData: function ( $collapsible ) { + var $settings = $collapsible.parent().data( 'collapsibleTabsSettings' ); + if ( $settings ) { + $collapsible.data( 'collapsibleTabsSettings', { + expandedContainer: $settings.expandedContainer, + collapsedContainer: $settings.collapsedContainer, + expandedWidth: $collapsible.width(), + prevElement: $collapsible.prev() + } ); + } + }, + getSettings: function ( $collapsible ) { + var $settings = $collapsible.data( 'collapsibleTabsSettings' ); + if ( !$settings ) { + $.collapsibleTabs.addData( $collapsible ); + $settings = $collapsible.data( 'collapsibleTabsSettings' ); + } + return $settings; + }, + handleResize: function () { + $.collapsibleTabs.instances.each( function () { + var $el = $( this ), + data = $.collapsibleTabs.getSettings( $el ); + + if ( data.shifting ) { + return; + } + + // if the two navigations are colliding + if ( $el.children( data.collapsible ).length > 0 && data.collapseCondition() ) { + + $el.trigger( 'beforeTabCollapse' ); + // move the element to the dropdown menu + $.collapsibleTabs.moveToCollapsed( $el.children( data.collapsible + ':last' ) ); + } + + // if there are still moveable items in the dropdown menu, + // and there is sufficient space to place them in the tab container + if ( $( data.collapsedContainer + ' ' + data.collapsible ).length > 0 && + data.expandCondition( $.collapsibleTabs.getSettings( $( data.collapsedContainer ).children( + data.collapsible + ':first' ) ).expandedWidth ) ) { + //move the element from the dropdown to the tab + $el.trigger( 'beforeTabExpand' ); + $.collapsibleTabs + .moveToExpanded( data.collapsedContainer + ' ' + data.collapsible + ':first' ); + } + } ); + }, + moveToCollapsed: function ( ele ) { + var outerData, expContainerSettings, target, + $moving = $( ele ); + + outerData = $.collapsibleTabs.getSettings( $moving ); + if ( !outerData ) { + return; + } + expContainerSettings = $.collapsibleTabs.getSettings( $( outerData.expandedContainer ) ); + if ( !expContainerSettings ) { + return; + } + expContainerSettings.shifting = true; + + // Remove the element from where it's at and put it in the dropdown menu + target = outerData.collapsedContainer; + $moving.css( 'position', 'relative' ) + .css( ( rtl ? 'left' : 'right' ), 0 ) + .animate( { width: '1px' }, 'normal', function () { + var data, expContainerSettings; + $( this ).hide(); + // add the placeholder + $( '<span class="placeholder" style="display: none;"></span>' ).insertAfter( this ); + $( this ).detach().prependTo( target ).data( 'collapsibleTabsSettings', outerData ); + $( this ).attr( 'style', 'display: list-item;' ); + data = $.collapsibleTabs.getSettings( $( ele ) ); + if ( data ) { + expContainerSettings = $.collapsibleTabs.getSettings( $( data.expandedContainer ) ); + if ( expContainerSettings ) { + expContainerSettings.shifting = false; + $.collapsibleTabs.handleResize(); + } + } + } ); + }, + moveToExpanded: function ( ele ) { + var data, expContainerSettings, $target, expandedWidth, + $moving = $( ele ); + + data = $.collapsibleTabs.getSettings( $moving ); + if ( !data ) { + return; + } + expContainerSettings = $.collapsibleTabs.getSettings( $( data.expandedContainer ) ); + if ( !expContainerSettings ) { + return; + } + expContainerSettings.shifting = true; + + // grab the next appearing placeholder so we can use it for replacing + $target = $( data.expandedContainer ).find( 'span.placeholder:first' ); + expandedWidth = data.expandedWidth; + $moving.css( 'position', 'relative' ).css( ( rtl ? 'right' : 'left' ), 0 ).css( 'width', '1px' ); + $target.replaceWith( + $moving + .detach() + .css( 'width', '1px' ) + .data( 'collapsibleTabsSettings', data ) + .animate( { width: expandedWidth + 'px' }, 'normal', function () { + $( this ).attr( 'style', 'display: block;' ); + var data, expContainerSettings; + data = $.collapsibleTabs.getSettings( $( this ) ); + if ( data ) { + expContainerSettings = $.collapsibleTabs.getSettings( $( data.expandedContainer ) ); + if ( expContainerSettings ) { + expContainerSettings.shifting = false; + $.collapsibleTabs.handleResize(); + } + } + } ) + ); + } + }; + +}( jQuery ) ); |