Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 | 2x 2x 2x 2x 28x 28x 28x 28x 2x 28x 28x 28x 28x 28x 28x 4x 108x 28x 28x 28x 28x 28x 164x 164x 164x 164x 28x 28x 28x 40x 40x 40x 28x 28x 28x 16x 16x 88x 28x 28x | /**
* Copyright 2019 Adobe. All rights reserved.
* This file is licensed to you under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. You may obtain a copy
* of the License at http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under
* the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
* OF ANY KIND, either express or implied. See the License for the specific language
* governing permissions and limitations under the License.
*/
import {BaseComponent} from '../../../coral-base-component';
import {commons} from '../../../coral-utils';
import {Decorator} from '../../../coral-decorator';
const CLASSNAME = '_coral-MillerColumns-item';
/**
@class Coral.ColumnView.Preview
@classdesc A ColumnView Preview component
@htmltag coral-columnview-preview
@extends {HTMLElement}
@extends {BaseComponent}
*/
const ColumnViewPreview = Decorator(class extends BaseComponent(HTMLElement) {
/** @ignore */
constructor() {
super();
// Content zone
this._elements = {
content: this.querySelector('coral-columnview-preview-content') || document.createElement('coral-columnview-preview-content')
};
}
/**
The content of the Preview.
@type {ColumnViewPreviewContent}
@contentzone
*/
get content() {
return this._getContentZone(this._elements.content);
}
set content(value) {
this._setContentZone('content', value, {
handle: 'content',
tagName: 'coral-columnview-preview-content',
insert: function (content) {
content.classList.add('coral-Body--small');
this.appendChild(content);
}
});
}
get _contentZones() {
return {'coral-columnview-preview-content': 'content'};
}
/** @ignore */
render() {
super.render();
this.setAttribute('role', 'group');
this.id = this.id || commons.getUID();
this.classList.add(CLASSNAME);
const content = this._elements.content;
// when the content zone was not created, we need to make sure that everything is added inside it as a content.
// this stops the content zone from being voracious
if (!content.parentNode) {
// move the contents of the item into the content zone
while (this.firstChild) {
content.appendChild(this.firstChild);
}
}
// Call content zone insert
this.content = content;
this._makeAccessible();
}
/** @ignore */
_makeAccessible() {
// @a11y For item values with a label, identify the value as a focusable, readOnly textbox labeled by the label.
let elements = this.content.querySelectorAll('coral-columnview-preview-label + coral-columnview-preview-value');
let length = elements.length;
let i;
let element;
let elementLabel;
// @a11y If the previous column has selected items,
// dIo not include item values in the tab order,
// so that a keyboard user can quickly advance to a subsequent toolbar.
for (i = 0 ; i < length ; i++) {
element = elements[i];
elementLabel = element.previousElementSibling;
elementLabel.id = elementLabel.id || commons.getUID();
// force ChromeVox to read value of textbox
if (window.cvox) {
element.setAttribute('aria-valuetext', element.textContent);
}
}
// @a11y Expose separator as a horizontally-oriented separator.
elements = this.content.querySelectorAll('coral-columnview-preview-separator');
length = elements.length;
for (i = 0 ; i < length ; i++) {
element = elements[i];
element.setAttribute('role', 'separator');
element.setAttribute('aria-orientation', 'horizontal');
}
// @a11y If the preview asset image does not include an alt attribute, set alt="", so that screen readers do not announce the image url.
elements = this.content.querySelectorAll('coral-columnview-preview-asset > img:not([alt])');
length = elements.length;
for (i = 0 ; i < length ; i++) {
element = elements[i];
element.setAttribute('alt', '');
}
}
});
export default ColumnViewPreview;
|