@angular/material
Version:
Angular Material
159 lines • 20.4 kB
JavaScript
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
// This file contains the `_computeAriaAccessibleName` function, which computes what the *expected*
// ARIA accessible name would be for a given element. Implements a subset of ARIA specification
// [Accessible Name and Description Computation 1.2](https://www.w3.org/TR/accname-1.2/).
//
// Specification accname-1.2 can be summarized by returning the result of the first method
// available.
//
// 1. `aria-labelledby` attribute
// ```
// <!-- example using aria-labelledby-->
// <label id='label-id'>Start Date</label>
// <input aria-labelledby='label-id'/>
// ```
// 2. `aria-label` attribute (e.g. `<input aria-label="Departure"/>`)
// 3. Label with `for`/`id`
// ```
// <!-- example using for/id -->
// <label for="current-node">Label</label>
// <input id="current-node"/>
// ```
// 4. `placeholder` attribute (e.g. `<input placeholder="06/03/1990"/>`)
// 5. `title` attribute (e.g. `<input title="Check-In"/>`)
// 6. text content
// ```
// <!-- example using text content -->
// <label for="current-node"><span>Departure</span> Date</label>
// <input id="current-node"/>
// ```
/**
* Computes the *expected* ARIA accessible name for argument element based on [accname-1.2
* specification](https://www.w3.org/TR/accname-1.2/). Implements a subset of accname-1.2,
* and should only be used for the Datepicker's specific use case.
*
* Intended use:
* This is not a general use implementation. Only implements the parts of accname-1.2 that are
* required for the Datepicker's specific use case. This function is not intended for any other
* use.
*
* Limitations:
* - Only covers the needs of `matStartDate` and `matEndDate`. Does not support other use cases.
* - See NOTES's in implementation for specific details on what parts of the accname-1.2
* specification are not implemented.
*
* @param element {HTMLInputElement} native <input/> element of `matStartDate` or
* `matEndDate` component. Corresponds to the 'Root Element' from accname-1.2
*
* @return expected ARIA accessible name of argument <input/>
*/
export function _computeAriaAccessibleName(element) {
return _computeAriaAccessibleNameInternal(element, true);
}
/**
* Determine if argument node is an Element based on `nodeType` property. This function is safe to
* use with server-side rendering.
*/
function ssrSafeIsElement(node) {
return node.nodeType === Node.ELEMENT_NODE;
}
/**
* Determine if argument node is an HTMLInputElement based on `nodeName` property. This funciton is
* safe to use with server-side rendering.
*/
function ssrSafeIsHTMLInputElement(node) {
return node.nodeName === 'INPUT';
}
/**
* Determine if argument node is an HTMLTextAreaElement based on `nodeName` property. This
* funciton is safe to use with server-side rendering.
*/
function ssrSafeIsHTMLTextAreaElement(node) {
return node.nodeName === 'TEXTAREA';
}
/**
* Calculate the expected ARIA accessible name for given DOM Node. Given DOM Node may be either the
* "Root node" passed to `_computeAriaAccessibleName` or "Current node" as result of recursion.
*
* @return the accessible name of argument DOM Node
*
* @param currentNode node to determine accessible name of
* @param isDirectlyReferenced true if `currentNode` is the root node to calculate ARIA accessible
* name of. False if it is a result of recursion.
*/
function _computeAriaAccessibleNameInternal(currentNode, isDirectlyReferenced) {
// NOTE: this differs from accname-1.2 specification.
// - Does not implement Step 1. of accname-1.2: '''If `currentNode`'s role prohibits naming,
// return the empty string ("")'''.
// - Does not implement Step 2.A. of accname-1.2: '''if current node is hidden and not directly
// referenced by aria-labelledby... return the empty string.'''
// acc-name-1.2 Step 2.B.: aria-labelledby
if (ssrSafeIsElement(currentNode) && isDirectlyReferenced) {
const labelledbyIds = currentNode.getAttribute?.('aria-labelledby')?.split(/\s+/g) || [];
const validIdRefs = labelledbyIds.reduce((validIds, id) => {
const elem = document.getElementById(id);
if (elem) {
validIds.push(elem);
}
return validIds;
}, []);
if (validIdRefs.length) {
return validIdRefs
.map(idRef => {
return _computeAriaAccessibleNameInternal(idRef, false);
})
.join(' ');
}
}
// acc-name-1.2 Step 2.C.: aria-label
if (ssrSafeIsElement(currentNode)) {
const ariaLabel = currentNode.getAttribute('aria-label')?.trim();
if (ariaLabel) {
return ariaLabel;
}
}
// acc-name-1.2 Step 2.D. attribute or element that defines a text alternative
//
// NOTE: this differs from accname-1.2 specification.
// Only implements Step 2.D. for `<label>`,`<input/>`, and `<textarea/>` element. Does not
// implement other elements that have an attribute or element that defines a text alternative.
if (ssrSafeIsHTMLInputElement(currentNode) || ssrSafeIsHTMLTextAreaElement(currentNode)) {
// use label with a `for` attribute referencing the current node
if (currentNode.labels?.length) {
return Array.from(currentNode.labels)
.map(x => _computeAriaAccessibleNameInternal(x, false))
.join(' ');
}
// use placeholder if available
const placeholder = currentNode.getAttribute('placeholder')?.trim();
if (placeholder) {
return placeholder;
}
// use title if available
const title = currentNode.getAttribute('title')?.trim();
if (title) {
return title;
}
}
// NOTE: this differs from accname-1.2 specification.
// - does not implement acc-name-1.2 Step 2.E.: '''if the current node is a control embedded
// within the label... then include the embedded control as part of the text alternative in
// the following manner...'''. Step 2E applies to embedded controls such as textbox, listbox,
// range, etc.
// - does not implement acc-name-1.2 step 2.F.: check that '''role allows name from content''',
// which applies to `currentNode` and its children.
// - does not implement acc-name-1.2 Step 2.F.ii.: '''Check for CSS generated textual content'''
// (e.g. :before and :after).
// - does not implement acc-name-1.2 Step 2.I.: '''if the current node has a Tooltip attribute,
// return its value'''
// Return text content with whitespace collapsed into a single space character. Accomplish
// acc-name-1.2 steps 2F, 2G, and 2H.
return (currentNode.textContent || '').replace(/\s+/g, ' ').trim();
}
//# sourceMappingURL=data:application/json;base64,{"version":3,"file":"aria-accessible-name.js","sourceRoot":"","sources":["../../../../../../src/material/datepicker/aria-accessible-name.ts"],"names":[],"mappings":"AAAA;;;;;;GAMG;AAEH,mGAAmG;AACnG,+FAA+F;AAC/F,yFAAyF;AACzF,EAAE;AACF,0FAA0F;AAC1F,aAAa;AACb,EAAE;AACF,kCAAkC;AAClC,UAAU;AACV,8CAA8C;AAC9C,gDAAgD;AAChD,4CAA4C;AAC5C,UAAU;AACV,sEAAsE;AACtE,4BAA4B;AAC5B,UAAU;AACV,sCAAsC;AACtC,gDAAgD;AAChD,mCAAmC;AACnC,UAAU;AACV,yEAAyE;AACzE,2DAA2D;AAC3D,mBAAmB;AACnB,UAAU;AACV,4CAA4C;AAC5C,sEAAsE;AACtE,mCAAmC;AACnC,UAAU;AAEV;;;;;;;;;;;;;;;;;;;GAmBG;AACH,MAAM,UAAU,0BAA0B,CACxC,OAA+C;IAE/C,OAAO,kCAAkC,CAAC,OAAO,EAAE,IAAI,CAAC,CAAC;AAC3D,CAAC;AAED;;;GAGG;AACH,SAAS,gBAAgB,CAAC,IAAU;IAClC,OAAO,IAAI,CAAC,QAAQ,KAAK,IAAI,CAAC,YAAY,CAAC;AAC7C,CAAC;AAED;;;GAGG;AACH,SAAS,yBAAyB,CAAC,IAAU;IAC3C,OAAO,IAAI,CAAC,QAAQ,KAAK,OAAO,CAAC;AACnC,CAAC;AAED;;;GAGG;AACH,SAAS,4BAA4B,CAAC,IAAU;IAC9C,OAAO,IAAI,CAAC,QAAQ,KAAK,UAAU,CAAC;AACtC,CAAC;AAED;;;;;;;;;GASG;AACH,SAAS,kCAAkC,CACzC,WAAiB,EACjB,oBAA6B;IAE7B,qDAAqD;IACrD,6FAA6F;IAC7F,sCAAsC;IACtC,gGAAgG;IAChG,kEAAkE;IAElE,0CAA0C;IAC1C,IAAI,gBAAgB,CAAC,WAAW,CAAC,IAAI,oBAAoB,EAAE;QACzD,MAAM,aAAa,GACjB,WAAW,CAAC,YAAY,EAAE,CAAC,iBAAiB,CAAC,EAAE,KAAK,CAAC,MAAM,CAAC,IAAI,EAAE,CAAC;QACrE,MAAM,WAAW,GAAkB,aAAa,CAAC,MAAM,CAAC,CAAC,QAAQ,EAAE,EAAE,EAAE,EAAE;YACvE,MAAM,IAAI,GAAG,QAAQ,CAAC,cAAc,CAAC,EAAE,CAAC,CAAC;YACzC,IAAI,IAAI,EAAE;gBACR,QAAQ,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;aACrB;YACD,OAAO,QAAQ,CAAC;QAClB,CAAC,EAAE,EAAmB,CAAC,CAAC;QAExB,IAAI,WAAW,CAAC,MAAM,EAAE;YACtB,OAAO,WAAW;iBACf,GAAG,CAAC,KAAK,CAAC,EAAE;gBACX,OAAO,kCAAkC,CAAC,KAAK,EAAE,KAAK,CAAC,CAAC;YAC1D,CAAC,CAAC;iBACD,IAAI,CAAC,GAAG,CAAC,CAAC;SACd;KACF;IAED,qCAAqC;IACrC,IAAI,gBAAgB,CAAC,WAAW,CAAC,EAAE;QACjC,MAAM,SAAS,GAAG,WAAW,CAAC,YAAY,CAAC,YAAY,CAAC,EAAE,IAAI,EAAE,CAAC;QAEjE,IAAI,SAAS,EAAE;YACb,OAAO,SAAS,CAAC;SAClB;KACF;IAED,8EAA8E;IAC9E,EAAE;IACF,qDAAqD;IACrD,0FAA0F;IAC1F,8FAA8F;IAC9F,IAAI,yBAAyB,CAAC,WAAW,CAAC,IAAI,4BAA4B,CAAC,WAAW,CAAC,EAAE;QACvF,gEAAgE;QAChE,IAAI,WAAW,CAAC,MAAM,EAAE,MAAM,EAAE;YAC9B,OAAO,KAAK,CAAC,IAAI,CAAC,WAAW,CAAC,MAAM,CAAC;iBAClC,GAAG,CAAC,CAAC,CAAC,EAAE,CAAC,kCAAkC,CAAC,CAAC,EAAE,KAAK,CAAC,CAAC;iBACtD,IAAI,CAAC,GAAG,CAAC,CAAC;SACd;QAED,+BAA+B;QAC/B,MAAM,WAAW,GAAG,WAAW,CAAC,YAAY,CAAC,aAAa,CAAC,EAAE,IAAI,EAAE,CAAC;QACpE,IAAI,WAAW,EAAE;YACf,OAAO,WAAW,CAAC;SACpB;QAED,yBAAyB;QACzB,MAAM,KAAK,GAAG,WAAW,CAAC,YAAY,CAAC,OAAO,CAAC,EAAE,IAAI,EAAE,CAAC;QACxD,IAAI,KAAK,EAAE;YACT,OAAO,KAAK,CAAC;SACd;KACF;IAED,qDAAqD;IACrD,6FAA6F;IAC7F,+FAA+F;IAC/F,iGAAiG;IACjG,kBAAkB;IAClB,gGAAgG;IAChG,sDAAsD;IACtD,iGAAiG;IACjG,gCAAgC;IAChC,gGAAgG;IAChG,yBAAyB;IAEzB,0FAA0F;IAC1F,qCAAqC;IACrC,OAAO,CAAC,WAAW,CAAC,WAAW,IAAI,EAAE,CAAC,CAAC,OAAO,CAAC,MAAM,EAAE,GAAG,CAAC,CAAC,IAAI,EAAE,CAAC;AACrE,CAAC","sourcesContent":["/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n// This file contains the `_computeAriaAccessibleName` function, which computes what the *expected*\n// ARIA accessible name would be for a given element. Implements a subset of ARIA specification\n// [Accessible Name and Description Computation 1.2](https://www.w3.org/TR/accname-1.2/).\n//\n// Specification accname-1.2 can be summarized by returning the result of the first method\n// available.\n//\n//  1. `aria-labelledby` attribute\n//     ```\n//       <!-- example using aria-labelledby-->\n//       <label id='label-id'>Start Date</label>\n//       <input aria-labelledby='label-id'/>\n//     ```\n//  2. `aria-label` attribute (e.g. `<input aria-label=\"Departure\"/>`)\n//  3. Label with `for`/`id`\n//     ```\n//       <!-- example using for/id -->\n//       <label for=\"current-node\">Label</label>\n//       <input id=\"current-node\"/>\n//     ```\n//  4. `placeholder` attribute (e.g. `<input placeholder=\"06/03/1990\"/>`)\n//  5. `title` attribute (e.g. `<input title=\"Check-In\"/>`)\n//  6. text content\n//     ```\n//       <!-- example using text content -->\n//       <label for=\"current-node\"><span>Departure</span> Date</label>\n//       <input id=\"current-node\"/>\n//     ```\n\n/**\n * Computes the *expected* ARIA accessible name for argument element based on [accname-1.2\n * specification](https://www.w3.org/TR/accname-1.2/). Implements a subset of accname-1.2,\n * and should only be used for the Datepicker's specific use case.\n *\n * Intended use:\n * This is not a general use implementation. Only implements the parts of accname-1.2 that are\n * required for the Datepicker's specific use case. This function is not intended for any other\n * use.\n *\n * Limitations:\n *  - Only covers the needs of `matStartDate` and `matEndDate`. Does not support other use cases.\n *  - See NOTES's in implementation for specific details on what parts of the accname-1.2\n *  specification are not implemented.\n *\n *  @param element {HTMLInputElement} native &lt;input/&gt; element of `matStartDate` or\n *  `matEndDate` component. Corresponds to the 'Root Element' from accname-1.2\n *\n *  @return expected ARIA accessible name of argument &lt;input/&gt;\n */\nexport function _computeAriaAccessibleName(\n  element: HTMLInputElement | HTMLTextAreaElement,\n): string {\n  return _computeAriaAccessibleNameInternal(element, true);\n}\n\n/**\n * Determine if argument node is an Element based on `nodeType` property. This function is safe to\n * use with server-side rendering.\n */\nfunction ssrSafeIsElement(node: Node): node is Element {\n  return node.nodeType === Node.ELEMENT_NODE;\n}\n\n/**\n * Determine if argument node is an HTMLInputElement based on `nodeName` property. This funciton is\n * safe to use with server-side rendering.\n */\nfunction ssrSafeIsHTMLInputElement(node: Node): node is HTMLInputElement {\n  return node.nodeName === 'INPUT';\n}\n\n/**\n * Determine if argument node is an HTMLTextAreaElement based on `nodeName` property. This\n * funciton is safe to use with server-side rendering.\n */\nfunction ssrSafeIsHTMLTextAreaElement(node: Node): node is HTMLTextAreaElement {\n  return node.nodeName === 'TEXTAREA';\n}\n\n/**\n * Calculate the expected ARIA accessible name for given DOM Node. Given DOM Node may be either the\n * \"Root node\" passed to `_computeAriaAccessibleName` or \"Current node\" as result of recursion.\n *\n * @return the accessible name of argument DOM Node\n *\n * @param currentNode node to determine accessible name of\n * @param isDirectlyReferenced true if `currentNode` is the root node to calculate ARIA accessible\n * name of. False if it is a result of recursion.\n */\nfunction _computeAriaAccessibleNameInternal(\n  currentNode: Node,\n  isDirectlyReferenced: boolean,\n): string {\n  // NOTE: this differs from accname-1.2 specification.\n  //  - Does not implement Step 1. of accname-1.2: '''If `currentNode`'s role prohibits naming,\n  //    return the empty string (\"\")'''.\n  //  - Does not implement Step 2.A. of accname-1.2: '''if current node is hidden and not directly\n  //    referenced by aria-labelledby... return the empty string.'''\n\n  // acc-name-1.2 Step 2.B.: aria-labelledby\n  if (ssrSafeIsElement(currentNode) && isDirectlyReferenced) {\n    const labelledbyIds: string[] =\n      currentNode.getAttribute?.('aria-labelledby')?.split(/\\s+/g) || [];\n    const validIdRefs: HTMLElement[] = labelledbyIds.reduce((validIds, id) => {\n      const elem = document.getElementById(id);\n      if (elem) {\n        validIds.push(elem);\n      }\n      return validIds;\n    }, [] as HTMLElement[]);\n\n    if (validIdRefs.length) {\n      return validIdRefs\n        .map(idRef => {\n          return _computeAriaAccessibleNameInternal(idRef, false);\n        })\n        .join(' ');\n    }\n  }\n\n  // acc-name-1.2 Step 2.C.: aria-label\n  if (ssrSafeIsElement(currentNode)) {\n    const ariaLabel = currentNode.getAttribute('aria-label')?.trim();\n\n    if (ariaLabel) {\n      return ariaLabel;\n    }\n  }\n\n  // acc-name-1.2 Step 2.D. attribute or element that defines a text alternative\n  //\n  // NOTE: this differs from accname-1.2 specification.\n  // Only implements Step 2.D. for `<label>`,`<input/>`, and `<textarea/>` element. Does not\n  // implement other elements that have an attribute or element that defines a text alternative.\n  if (ssrSafeIsHTMLInputElement(currentNode) || ssrSafeIsHTMLTextAreaElement(currentNode)) {\n    // use label with a `for` attribute referencing the current node\n    if (currentNode.labels?.length) {\n      return Array.from(currentNode.labels)\n        .map(x => _computeAriaAccessibleNameInternal(x, false))\n        .join(' ');\n    }\n\n    // use placeholder if available\n    const placeholder = currentNode.getAttribute('placeholder')?.trim();\n    if (placeholder) {\n      return placeholder;\n    }\n\n    // use title if available\n    const title = currentNode.getAttribute('title')?.trim();\n    if (title) {\n      return title;\n    }\n  }\n\n  // NOTE: this differs from accname-1.2 specification.\n  //  - does not implement acc-name-1.2 Step 2.E.: '''if the current node is a control embedded\n  //     within the label... then include the embedded control as part of the text alternative in\n  //     the following manner...'''. Step 2E applies to embedded controls such as textbox, listbox,\n  //     range, etc.\n  //  - does not implement acc-name-1.2 step 2.F.: check that '''role allows name from content''',\n  //    which applies to `currentNode` and its children.\n  //  - does not implement acc-name-1.2 Step 2.F.ii.: '''Check for CSS generated textual content'''\n  //    (e.g. :before and :after).\n  //  - does not implement acc-name-1.2 Step 2.I.: '''if the current node has a Tooltip attribute,\n  //    return its value'''\n\n  // Return text content with whitespace collapsed into a single space character. Accomplish\n  // acc-name-1.2 steps 2F, 2G, and 2H.\n  return (currentNode.textContent || '').replace(/\\s+/g, ' ').trim();\n}\n"]}