81 lines
1.9 KiB
JavaScript
81 lines
1.9 KiB
JavaScript
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/* OnBlur Manager Class */
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export class OnBlurManager{
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/* (1) Initialize an OnBlurManager
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*
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* @root<Element> The root element to work in
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*
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---------------------------------------------------------*/
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constructor(root){
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/* (1) Error: invalid @root argument */
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if( !(root instanceof Element) )
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throw new Error(`[OnBlurManager::new] expected argument to be of type (Element), received (${typeof root})`);
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/* (2) Store as attribute */
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this.root = root;
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/* (3) Initialize @callback list */
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this.callback = {};
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/* (4) Bind to event */
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this.root.addEventListener('click', function(e){
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// launch each callback
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for( var c of Object.keys(this.callback) )
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this.callback[c](e);
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}.bind(this) );
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}
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/* (2) Add a @callback
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*
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* @index<String> String to name the callback for removing
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* @callback<Function> Function to link to callback
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*
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* @return linked<bool> Whether the callback has been linked
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*
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---------------------------------------------------------*/
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link(index, callback){
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/* (1) Fail: invalid @index or @callback arguments */
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if( typeof index !== 'string' || !(callback instanceof Function) ){
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console.error(`[OnBlurManager::link] expected (String, Function), received (${typeof index}, ${typeof callback})`);
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return false;
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}
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/* (2) Add to list of callbacks */
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return ( this.callback[index] = callback ) instanceof Function;
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}
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/* (3) Unlink a @callback
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*
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* @index<String> Name of the callback to remove
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*
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* @return unlinked<bool> Whether the callback has been unlinked
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*
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---------------------------------------------------------*/
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unlink(index, callback){
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/* (1) Fail: invalid @index argument */
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if( typeof index !== 'string' ){
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console.error(`[OnBlurManager::unlink] expected (String), received (${typeof index})`);
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return false;
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}
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/* (2) Remove from list of callbacks */
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return ( delete this.callback[index] );
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}
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}
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