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TableFilter/docs/file/src/extensions/filtersVisibility/filtersVisibility.js.html
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<title data-ice="title">src/extensions/filtersVisibility/filtersVisibility.js | tablefilter</title>
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<li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-AUTO_FILTER_DELAY">AUTO_FILTER_DELAY</a></span></span></li>
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<li data-ice="doc"><a data-ice="dirPath" class="nav-dir-path" href="identifiers.html#extensions-colops">extensions/colOps</a><span data-ice="kind" class="kind-class">C</span><span data-ice="name"><span><a href="class/src/extensions/colOps/colOps.js~ColOps.html">ColOps</a></span></span></li>
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<div class="content" data-ice="content"><h1 data-ice="title">src/extensions/filtersVisibility/filtersVisibility.js</h1>
<pre class="source-code line-number raw-source-code"><code class="prettyprint linenums" data-ice="content">import {Feature} from &apos;../../feature&apos;;
import {createElm, removeElm, elm} from &apos;../../dom&apos;;
import {EMPTY_FN, isNull} from &apos;../../types&apos;;
import {addEvt} from &apos;../../event&apos;;
import {
defaultsBool, defaultsStr, defaultsFn, defaultsNb,
} from &apos;../../settings&apos;;
import {RIGHT} from &apos;../../modules/toolbar&apos;;
/**
* Filters Visibility extension
*/
export default class FiltersVisibility extends Feature {
/**
* Creates an instance of FiltersVisibility
* @param {TableFilter} tf TableFilter instance
* @param {Object} Configuration object
*/
constructor(tf, f) {
super(tf, f.name);
/**
* Module name
* @type {String}
*/
this.name = f.name;
/**
* Module description
* @type {String}
*/
this.desc = defaultsStr(f.description,
&apos;Filters row visibility manager&apos;);
/**
* Extension&apos;s stylesheet filename
* @type {String}
*/
this.stylesheet = defaultsStr(f.stylesheet , &apos;filtersVisibility.css&apos;);
/**
* Expand icon filename
* @type {String}
*/
this.icnExpand = defaultsStr(f.expand_icon_name, &apos;icn_exp.png&apos;);
/**
* Collapse icon filename
* @type {String}
*/
this.icnCollapse = defaultsStr(f.collapse_icon_name, &apos;icn_clp.png&apos;);
/**
* Main container element
* @private
*/
this.contEl = null;
/**
* Button element
* @private
*/
this.btnEl = null;
/**
* Expand icon HTML
* @private
*/
this.icnExpandHtml = &apos;&lt;img src=&quot;&apos; + tf.themesPath + this.icnExpand +
&apos;&quot; alt=&quot;Expand filters&quot; &gt;&apos;;
/**
* Collapse icon HTML
* @private
*/
this.icnCollapseHtml = &apos;&lt;img src=&quot;&apos; + tf.themesPath + this.icnCollapse +
&apos;&quot; alt=&quot;Collapse filters&quot; &gt;&apos;;
/**
* Default text
* @private
*/
this.defaultText = &apos;Toggle filters&apos;;
/**
* ID of main container element
* @type {String}
*/
this.targetId = f.target_id || null;
/**
* Enable expand/collapse icon, defaults to true
* @type {Boolean}
*/
this.enableIcon = defaultsBool(f.enable_icon, true);
/**
* Custom text for button
* @type {String}
*/
this.btnText = defaultsStr(f.btn_text, &apos;&apos;);
/**
* Collapse button HTML
* @private
*/
this.collapseBtnHtml = this.enableIcon ?
this.icnCollapseHtml + this.btnText :
this.btnText || this.defaultText;
/**
* Expand button HTML
* @private
*/
this.expandBtnHtml = this.enableIcon ?
this.icnExpandHtml + this.btnText :
this.btnText || this.defaultText;
/**
* Button&apos;s custom HTML
* @type {String}
*/
this.btnHtml = defaultsStr(f.btn_html, null);
/**
* Css class for expand/collapse filters button
* @type {String}
*/
this.btnCssClass = defaultsStr(f.btn_css_class, &apos;btnExpClpFlt&apos;);
/**
* Css class for main container
* @type {String}
*/
this.contCssClass = defaultsStr(f.cont_css_class, &apos;expClpFlt&apos;);
/**
* Filters row index
* @type {Number}
*/
this.filtersRowIndex = defaultsNb(f.filters_row_index,
tf.getFiltersRowIndex());
/**
* Make filters visible at initialization, defaults to true
* @type {Boolean}
*/
this.visibleAtStart = defaultsNb(f.visible_at_start, true);
/**
* Default position in toolbar (&apos;left&apos;|&apos;center&apos;|&apos;right&apos;)
* @type {String}
*/
this.toolbarPosition = defaultsStr(f.toolbar_position, RIGHT);
/**
* Callback fired before filters row is shown
* @type {Function}
*/
this.onBeforeShow = defaultsFn(f.on_before_show, EMPTY_FN);
/**
* Callback fired after filters row is shown
* @type {Function}
*/
this.onAfterShow = defaultsFn(f.on_after_show, EMPTY_FN);
/**
* Callback fired before filters row is hidden
* @type {Function}
*/
this.onBeforeHide = defaultsFn(f.on_before_hide, EMPTY_FN);
/**
* Callback fired after filters row is hidden
* @type {Function}
*/
this.onAfterHide = defaultsFn(f.on_after_hide, EMPTY_FN);
//Import extension&apos;s stylesheet
tf.import(f.name + &apos;Style&apos;, tf.getStylePath() + this.stylesheet, null,
&apos;link&apos;);
this.enable();
}
/**
* Initialise extension
*/
init() {
if (this.initialized) {
return;
}
this.emitter.emit(&apos;initializing-extension&apos;, this,
!isNull(this.targetId));
this.buildUI();
/** @inherited */
this.initialized = true;
this.emitter.on([&apos;show-filters&apos;], (tf, visible) =&gt; this.show(visible));
this.emitter.emit(&apos;filters-visibility-initialized&apos;, this.tf, this);
this.emitter.emit(&apos;extension-initialized&apos;, this);
}
/**
* Build UI elements
*/
buildUI() {
let tf = this.tf;
let span = createElm(&apos;span&apos;);
span.className = this.contCssClass;
// Container element (rdiv or custom element)
let targetEl = !this.targetId ?
tf.feature(&apos;toolbar&apos;).container(this.toolbarPosition) :
elm(this.targetId);
if (!this.targetId) {
let firstChild = targetEl.firstChild;
firstChild.parentNode.insertBefore(span, firstChild);
} else {
targetEl.appendChild(span);
}
let btn;
if (!this.btnHtml) {
btn = createElm(&apos;a&apos;, [&apos;href&apos;, &apos;javascript:void(0);&apos;]);
btn.className = this.btnCssClass;
btn.title = this.btnText || this.defaultText;
btn.innerHTML = this.collapseBtnHtml;
span.appendChild(btn);
} else { // Custom html
span.innerHTML = this.btnHtml;
btn = span.firstChild;
}
addEvt(btn, &apos;click&apos;, () =&gt; this.toggle());
this.contEl = span;
this.btnEl = btn;
if (!this.visibleAtStart) {
this.toggle();
}
}
/**
* Toggle filters visibility
*/
toggle() {
let tf = this.tf;
let tbl = tf.gridLayout ? tf.feature(&apos;gridLayout&apos;).headTbl : tf.dom();
let fltRow = tbl.rows[this.filtersRowIndex];
let isDisplayed = fltRow.style.display === &apos;&apos;;
this.show(!isDisplayed);
}
/**
* Show or hide filters
*
* @param {boolean} [visible=true] Visibility flag
*/
show(visible = true) {
let tf = this.tf;
let tbl = tf.gridLayout ? tf.feature(&apos;gridLayout&apos;).headTbl : tf.dom();
let fltRow = tbl.rows[this.filtersRowIndex];
if (visible) {
this.onBeforeShow(this);
}
if (!visible) {
this.onBeforeHide(this);
}
fltRow.style.display = visible ? &apos;&apos; : &apos;none&apos;;
if (this.enableIcon &amp;&amp; !this.btnHtml) {
this.btnEl.innerHTML = visible ?
this.collapseBtnHtml : this.expandBtnHtml;
}
if (visible) {
this.onAfterShow(this);
}
if (!visible) {
this.onAfterHide(this);
}
this.emitter.emit(&apos;filters-toggled&apos;, tf, this, visible);
}
/**
* Destroy the UI
*/
destroy() {
if (!this.initialized) {
return;
}
this.emitter.off([&apos;show-filters&apos;], (tf, visible) =&gt; this.show(visible));
this.btnEl.innerHTML = &apos;&apos;;
removeElm(this.btnEl);
this.btnEl = null;
this.contEl.innerHTML = &apos;&apos;;
removeElm(this.contEl);
this.contEl = null;
this.initialized = false;
}
}
</code></pre>
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