mirror of
https://github.com/koalyptus/TableFilter.git
synced 2024-05-21 07:46:42 +02:00
149 lines
4.8 KiB
JavaScript
149 lines
4.8 KiB
JavaScript
import {Feature} from './feature';
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import Dom from '../dom';
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import Types from '../types';
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export class RowsCounter extends Feature{
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/**
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* Rows counter
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* @param {Object} tf TableFilter instance
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*/
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constructor(tf){
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super(tf, 'rowsCounter');
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// TableFilter configuration
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var f = this.config;
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//id of custom container element
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this.rowsCounterTgtId = f.rows_counter_target_id || null;
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//element containing tot nb rows
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this.rowsCounterDiv = null;
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//element containing tot nb rows label
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this.rowsCounterSpan = null;
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//defines rows counter text
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this.rowsCounterText = f.rows_counter_text || 'Rows: ';
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this.fromToTextSeparator = f.from_to_text_separator || '-';
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this.overText = f.over_text || ' / ';
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//defines css class rows counter
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this.totRowsCssClass = f.tot_rows_css_class || 'tot';
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//rows counter div
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this.prfxCounter = 'counter_';
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//nb displayed rows label
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this.prfxTotRows = 'totrows_span_';
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//label preceding nb rows label
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this.prfxTotRowsTxt = 'totRowsTextSpan_';
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//callback raised before counter is refreshed
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this.onBeforeRefreshCounter = Types.isFn(f.on_before_refresh_counter) ?
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f.on_before_refresh_counter : null;
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//callback raised after counter is refreshed
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this.onAfterRefreshCounter = Types.isFn(f.on_after_refresh_counter) ?
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f.on_after_refresh_counter : null;
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}
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init(){
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if(this.initialized){
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return;
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}
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var tf = this.tf;
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//rows counter container
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var countDiv = Dom.create('div', ['id', this.prfxCounter+tf.id]);
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countDiv.className = this.totRowsCssClass;
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//rows counter label
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var countSpan = Dom.create('span', ['id', this.prfxTotRows+tf.id]);
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var countText = Dom.create('span', ['id', this.prfxTotRowsTxt+tf.id]);
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countText.appendChild(Dom.text(this.rowsCounterText));
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// counter is added to defined element
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if(!this.rowsCounterTgtId){
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tf.setToolbar();
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}
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var targetEl = !this.rowsCounterTgtId ?
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tf.lDiv : Dom.id( this.rowsCounterTgtId );
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//default container: 'lDiv'
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if(!this.rowsCounterTgtId){
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countDiv.appendChild(countText);
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countDiv.appendChild(countSpan);
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targetEl.appendChild(countDiv);
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}
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else{
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//custom container, no need to append statusDiv
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targetEl.appendChild(countText);
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targetEl.appendChild(countSpan);
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}
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this.rowsCounterDiv = countDiv;
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this.rowsCounterSpan = countSpan;
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// subscribe to events
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this.emitter.on(['after-filtering', 'grouped-by-page'],
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()=> this.refresh(tf.nbVisibleRows));
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this.emitter.on(['rows-changed'], ()=> this.refresh());
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this.initialized = true;
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this.refresh();
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}
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refresh(p){
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if(!this.initialized || !this.isEnabled()){
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return;
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}
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var tf = this.tf;
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if(this.onBeforeRefreshCounter){
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this.onBeforeRefreshCounter.call(null, tf, this.rowsCounterSpan);
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}
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var totTxt;
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if(!tf.paging){
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if(p && p !== ''){
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totTxt = p;
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} else{
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totTxt = tf.nbFilterableRows - tf.nbHiddenRows;
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}
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} else {
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var paging = tf.feature('paging');
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if(paging){
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//paging start row
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var paging_start_row = parseInt(paging.startPagingRow, 10) +
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((tf.nbVisibleRows>0) ? 1 : 0);
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var paging_end_row = (paging_start_row+paging.pagingLength)-1 <=
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tf.nbVisibleRows ?
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paging_start_row+paging.pagingLength-1 :
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tf.nbVisibleRows;
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totTxt = paging_start_row + this.fromToTextSeparator +
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paging_end_row + this.overText + tf.nbVisibleRows;
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}
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}
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this.rowsCounterSpan.innerHTML = totTxt;
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if(this.onAfterRefreshCounter){
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this.onAfterRefreshCounter.call(
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null, tf, this.rowsCounterSpan, totTxt);
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}
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}
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destroy(){
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if(!this.initialized){
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return;
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}
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if(!this.rowsCounterTgtId && this.rowsCounterDiv){
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Dom.remove(this.rowsCounterDiv);
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} else {
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Dom.id(this.rowsCounterTgtId).innerHTML = '';
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}
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this.rowsCounterSpan = null;
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this.rowsCounterDiv = null;
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// unsubscribe to events
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this.emitter.off(['after-filtering', 'grouped-by-page'],
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()=> this.refresh(tf.nbVisibleRows));
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this.emitter.off(['rows-changed'], ()=> this.refresh());
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this.initialized = false;
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}
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}
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