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WikiLambda Vue component for setting the description of a ZFunction in the Function editor.
@copyright 2020– Abstract Wikipedia team; see AUTHORS.txt
@license MIT
-->
<template>
<wl-function-editor-field class="ext-wikilambda-app-function-editor-description">
<template #label>
<label :for="descriptionInputId">
{{ descriptionLabel }}
<span>{{ descriptionOptional }}</span>
</label>
</template>
<template #body>
<cdx-text-area
:id="descriptionInputId"
:model-value="description"
class="ext-wikilambda-app-function-editor-description__input"
:aria-label="descriptionLabel"
:placeholder="descriptionInputPlaceholder"
:maxlength="maxDescriptionChars"
@input="updateRemainingChars"
@change="persistDescription"
></cdx-text-area>
<div class="ext-wikilambda-app-function-editor-description__counter">
{{ remainingChars }}
</div>
</template>
</wl-function-editor-field>
</template>
<script>
const { CdxTextArea } = require( '@wikimedia/codex' );
const { defineComponent } = require( 'vue' );
const Constants = require( '../../../Constants.js' ),
FunctionEditorField = require( './FunctionEditorField.vue' ),
{ mapActions, mapGetters } = require( 'vuex' );
module.exports = exports = defineComponent( {
name: 'wl-function-editor-description',
components: {
'wl-function-editor-field': FunctionEditorField,
'cdx-text-area': CdxTextArea
},
props: {
zLanguage: {
type: String,
required: true
}
},
data: function () {
return {
ignoreChangeEvent: false,
maxDescriptionChars: Constants.DESCRIPTION_CHARS_MAX,
remainingChars: Constants.DESCRIPTION_CHARS_MAX
};
},
computed: Object.assign( mapGetters( [
'getRowByKeyPath',
'getZMonolingualTextValue',
'getZPersistentDescription'
] ), {
/**
* Returns the Short Description (Z2K5) row for the
* appropriate language
*
* @return {Object|undefined}
*/
descriptionRow: function () {
return this.zLanguage ?
this.getZPersistentDescription( this.zLanguage ) :
undefined;
},
/**
* Returns true if the current zObject has a description object
*
* @return {boolean}
*/
hasDescription: function () {
return this.descriptionRow !== undefined;
},
/**
* Returns the description value for the given language.
* If value is not available, returns empty string
*
* @return {string}
*/
description: function () {
return this.hasDescription ?
this.getZMonolingualTextValue( this.descriptionRow.id ) :
'';
},
/**
* Returns the label for the description field
*
* @return {string}
*/
descriptionLabel: function () {
// TODO (T335583): Replace i18n message with key label
// return this.getLabelData( Constants.Z_PERSISTENTOBJECT_DESCRIPTION );
return this.$i18n( 'wikilambda-function-definition-description-label' ).text();
},
/**
* Returns the i18n message for the description field placeholder
*
* @return {string}
*/
descriptionInputPlaceholder: function () {
return this.$i18n( 'wikilambda-function-definition-description-placeholder' ).text();
},
/**
* Returns the "optional" caption for the description field
*
* @return {string}
*/
descriptionOptional: function () {
return this.$i18n( 'parentheses', [ this.$i18n( 'wikilambda-optional' ).text() ] ).text();
},
/**
* Returns the id for the input field
*
* @return {string}
*/
descriptionInputId: function () {
return `ext-wikilambda-app-function-editor-description__input${ this.zLanguage }`;
}
} ),
methods: Object.assign( mapActions( [
'changeType',
'removeItemFromTypedList',
'setValueByRowIdAndPath'
] ), {
/**
* Updates the remainingChars data property as the user types into the Z2K5 field
*
* @param {Event} event - the event object that is automatically passed in on input
*/
updateRemainingChars: function ( event ) {
const { length } = event.target.value;
this.remainingChars = this.maxDescriptionChars - length;
},
/**
* Persist the new name value in the globally stored object
*
* @param {Object} event
*/
persistDescription: function ( event ) {
if ( this.ignoreChangeEvent ) {
return;
}
const value = event.target.value;
if ( this.hasDescription ) {
if ( value === '' ) {
this.removeItemFromTypedList( { rowId: this.descriptionRow.id } );
} else {
this.setValueByRowIdAndPath( {
rowId: this.descriptionRow.id,
keyPath: [
Constants.Z_MONOLINGUALSTRING_VALUE,
Constants.Z_STRING_VALUE
],
value
} );
}
} else {
// If this.descriptionRow is undefined, there's no monolingual string
// for the given language, so we create a new monolingual string
// with the new value and append to the parent list.
const parentRow = this.getRowByKeyPath( [
Constants.Z_PERSISTENTOBJECT_DESCRIPTION,
Constants.Z_MULTILINGUALSTRING_VALUE
] );
if ( !parentRow ) {
// This should never happen because all Z2Kn's are initialized
return;
}
this.changeType( {
id: parentRow.id,
type: Constants.Z_MONOLINGUALSTRING,
lang: this.zLanguage,
value,
append: true
} );
}
this.$emit( 'updated-description' );
}
} ),
mounted: function () {
this.$nextTick( function () {
this.remainingChars = this.maxDescriptionChars - this.description.length;
} );
},
beforeUnmount() {
// When the component is unmounted, we want to ignore any change events and not persist the data
this.ignoreChangeEvent = true;
}
} );
</script>
<style lang="less">
@import '../../../ext.wikilambda.app.variables.less';
.ext-wikilambda-app-function-editor-description {
.ext-wikilambda-app-function-editor-description__counter {
color: @color-subtle;
margin-left: @spacing-50;
display: flex;
justify-content: flex-end;
}
}
</style>
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