/**
* @output wp-includes/js/wp-emoji-loader.js
*/
/**
* Emoji Settings as exported in PHP via _print_emoji_detection_script().
* @typedef WPEmojiSettings
* @type {object}
* @property {?object} source
* @property {?string} source.concatemoji
* @property {?string} source.twemoji
* @property {?string} source.wpemoji
* @property {?boolean} DOMReady
* @property {?Function} readyCallback
*/
/**
* Support tests.
* @typedef SupportTests
* @type {object}
* @property {?boolean} flag
* @property {?boolean} emoji
*/
/**
* IIFE to detect emoji support and load Twemoji if needed.
*
* @param {Window} window
* @param {Document} document
* @param {WPEmojiSettings} settings
*/
( function wpEmojiLoader( window, document, settings ) {
if ( typeof Promise === 'undefined' ) {
return;
}
var sessionStorageKey = 'wpEmojiSettingsSupports';
var tests = [ 'flag', 'emoji' ];
/**
* Checks whether the browser supports offloading to a Worker.
*
* @since 6.3.0
*
* @private
*
* @returns {boolean}
*/
function supportsWorkerOffloading() {
return (
typeof Worker !== 'undefined' &&
typeof OffscreenCanvas !== 'undefined' &&
typeof URL !== 'undefined' &&
URL.createObjectURL &&
typeof Blob !== 'undefined'
);
}
/**
* @typedef SessionSupportTests
* @type {object}
* @property {number} timestamp
* @property {SupportTests} supportTests
*/
/**
* Get support tests from session.
*
* @since 6.3.0
*
* @private
*
* @returns {?SupportTests} Support tests, or null if not set or older than 1 week.
*/
function getSessionSupportTests() {
try {
/** @type {SessionSupportTests} */
var item = JSON.parse(
sessionStorage.getItem( sessionStorageKey )
);
if (
typeof item === 'object' &&
typeof item.timestamp === 'number' &&
new Date().valueOf() < item.timestamp + 604800 && // Note: Number is a week in seconds.
typeof item.supportTests === 'object'
) {
return item.supportTests;
}
} catch ( e ) {}
return null;
}
/**
* Persist the supports in session storage.
*
* @since 6.3.0
*
* @private
*
* @param {SupportTests} supportTests Support tests.
*/
function setSessionSupportTests( supportTests ) {
try {
/** @type {SessionSupportTests} */
var item = {
supportTests: supportTests,
timestamp: new Date().valueOf()
};
sessionStorage.setItem(
sessionStorageKey,
JSON.stringify( item )
);
} catch ( e ) {}
}
/**
* Checks if two sets of Emoji characters render the same visually.
*
* This is used to determine if the browser is rendering an emoji with multiple data points
* correctly. set1 is the emoji in the correct form, using a zero-width joiner. set2 is the emoji
* in the incorrect form, using a zero-width space. If the two sets render the same, then the browser
* does not support the emoji correctly.
*
* This function may be serialized to run in a Worker. Therefore, it cannot refer to variables from the containing
* scope. Everything must be passed by parameters.
*
* @since 4.9.0
*
* @private
*
* @param {CanvasRenderingContext2D} context 2D Context.
* @param {string} set1 Set of Emoji to test.
* @param {string} set2 Set of Emoji to test.
*
* @return {boolean} True if the two sets render the same.
*/
function emojiSetsRenderIdentically( context, set1, set2 ) {
// Cleanup from previous test.
context.clearRect( 0, 0, context.canvas.width, context.canvas.height );
context.fillText( set1, 0, 0 );
var rendered1 = new Uint32Array(
context.getImageData(
0,
0,
context.canvas.width,
context.canvas.height
).data
);
// Cleanup from previous test.
context.clearRect( 0, 0, context.canvas.width, context.canvas.height );
context.fillText( set2, 0, 0 );
var rendered2 = new Uint32Array(
context.getImageData(
0,
0,
context.canvas.width,
context.canvas.height
).data
);
return rendered1.every( function ( rendered2Data, index ) {
return rendered2Data === rendered2[ index ];
} );
}
/**
* Checks if the center point of a single emoji is empty.
*
* This is used to determine if the browser is rendering an emoji with a single data point
* correctly. The center point of an incorrectly rendered emoji will be empty. A correctly
* rendered emoji will have a non-zero value at the center point.
*
* This function may be serialized to run in a Worker. Therefore, it cannot refer to variables from the containing
* scope. Everything must be passed by parameters.
*
* @since 6.8.2
*
* @private
*
* @param {CanvasRenderingContext2D} context 2D Context.
* @param {string} emoji Emoji to test.
*
* @return {boolean} True if the center point is empty.
*/
function emojiRendersEmptyCenterPoint( context, emoji ) {
// Cleanup from previous test.
context.clearRect( 0, 0, context.canvas.width, context.canvas.height );
context.fillText( emoji, 0, 0 );
// Test if the center point (16, 16) is empty (0,0,0,0).
var centerPoint = context.getImageData(16, 16, 1, 1);
for ( var i = 0; i < centerPoint.data.length; i++ ) {
if ( centerPoint.data[ i ] !== 0 ) {
// Stop checking the moment it's known not to be empty.
return false;
}
}
return true;
}
/**
* Determines if the browser properly renders Emoji that Twemoji can supplement.
*
* This function may be serialized to run in a Worker. Therefore, it cannot refer to variables from the containing
* scope. Everything must be passed by parameters.
*
* @since 4.2.0
*
* @private
*
* @param {CanvasRenderingContext2D} context 2D Context.
* @param {string} type Whether to test for support of "flag" or "emoji".
* @param {Function} emojiSetsRenderIdentically Reference to emojiSetsRenderIdentically function, needed due to minification.
* @param {Function} emojiRendersEmptyCenterPoint Reference to emojiRendersEmptyCenterPoint function, needed due to minification.
*
* @return {boolean} True if the browser can render emoji, false if it cannot.
*/
function browserSupportsEmoji( context, type, emojiSetsRenderIdentically, emojiRendersEmptyCenterPoint ) {
var isIdentical;
switch ( type ) {
case 'flag':
/*
* Test for Transgender flag compatibility. Added in Unicode 13.
*
* To test for support, we try to render it, and compare the rendering to how it would look if
* the browser doesn't render it correctly (white flag emoji + transgender symbol).
*/
isIdentical = emojiSetsRenderIdentically(
context,
'\uD83C\uDFF3\uFE0F\u200D\u26A7\uFE0F', // as a zero-width joiner sequence
'\uD83C\uDFF3\uFE0F\u200B\u26A7\uFE0F' // separated by a zero-width space
);
if ( isIdentical ) {
return false;
}
/*
* Test for Sark flag compatibility. This is the least supported of the letter locale flags,
* so gives us an easy test for full support.
*
* To test for support, we try to render it, and compare the rendering to how it would look if
* the browser doesn't render it correctly ([C] + [Q]).
*/
isIdentical = emojiSetsRenderIdentically(
context,
'\uD83C\uDDE8\uD83C\uDDF6', // as the sequence of two code points
'\uD83C\uDDE8\u200B\uD83C\uDDF6' // as the two code points separated by a zero-width space
);
if ( isIdentical ) {
return false;
}
/*
* Test for English flag compatibility. England is a country in the United Kingdom, it
* does not have a two letter locale code but rather a five letter sub-division code.
*
* To test for support, we try to render it, and compare the rendering to how it would look if
* the browser doesn't render it correctly (black flag emoji + [G] + [B] + [E] + [N] + [G]).
*/
isIdentical = emojiSetsRenderIdentically(
context,
// as the flag sequence
'\uD83C\uDFF4\uDB40\uDC67\uDB40\uDC62\uDB40\uDC65\uDB40\uDC6E\uDB40\uDC67\uDB40\uDC7F',
// with each code point separated by a zero-width space
'\uD83C\uDFF4\u200B\uDB40\uDC67\u200B\uDB40\uDC62\u200B\uDB40\uDC65\u200B\uDB40\uDC6E\u200B\uDB40\uDC67\u200B\uDB40\uDC7F'
);
return ! isIdentical;
case 'emoji':
/*
* Does Emoji 16.0 cause the browser to go splat?
*
* To test for Emoji 16.0 support, try to render a new emoji: Splatter.
*
* The splatter emoji is a single code point emoji. Testing for browser support
* required testing the center point of the emoji to see if it is empty.
*
* 0xD83E 0xDEDF (\uD83E\uDEDF) == Splatter.
*
* When updating this test, please ensure that the emoji is either a single code point
* or switch to using the emojiSetsRenderIdentically function and testing with a zero-width
* joiner vs a zero-width space.
*/
var notSupported = emojiRendersEmptyCenterPoint( context, '\uD83E\uDEDF' );
return ! notSupported;
}
return false;
}
/**
* Checks emoji support tests.
*
* This function may be serialized to run in a Worker. Therefore, it cannot refer to variables from the containing
* scope. Everything must be passed by parameters.
*
* @since 6.3.0
*
* @private
*
* @param {string[]} tests Tests.
* @param {Function} browserSupportsEmoji Reference to browserSupportsEmoji function, needed due to minification.
* @param {Function} emojiSetsRenderIdentically Reference to emojiSetsRenderIdentically function, needed due to minification.
* @param {Function} emojiRendersEmptyCenterPoint Reference to emojiRendersEmptyCenterPoint function, needed due to minification.
*
* @return {SupportTests} Support tests.
*/
function testEmojiSupports( tests, browserSupportsEmoji, emojiSetsRenderIdentically, emojiRendersEmptyCenterPoint ) {
var canvas;
if (
typeof WorkerGlobalScope !== 'undefined' &&
self instanceof WorkerGlobalScope
) {
canvas = new OffscreenCanvas( 300, 150 ); // Dimensions are default for HTMLCanvasElement.
} else {
canvas = document.createElement( 'canvas' );
}
var context = canvas.getContext( '2d', { willReadFrequently: true } );
/*
* Chrome on OS X added native emoji rendering in M41. Unfortunately,
* it doesn't work when the font is bolder than 500 weight. So, we
* check for bold rendering support to avoid invisible emoji in Chrome.
*/
context.textBaseline = 'top';
context.font = '600 32px Arial';
var supports = {};
tests.forEach( function ( test ) {
supports[ test ] = browserSupportsEmoji( context, test, emojiSetsRenderIdentically, emojiRendersEmptyCenterPoint );
} );
return supports;
}
/**
* Adds a script to the head of the document.
*
* @ignore
*
* @since 4.2.0
*
* @param {string} src The url where the script is located.
*
* @return {void}
*/
function addScript( src ) {
var script = document.createElement( 'script' );
script.src = src;
script.defer = true;
document.head.appendChild( script );
}
settings.supports = {
everything: true,
everythingExceptFlag: true
};
// Create a promise for DOMContentLoaded since the worker logic may finish after the event has fired.
var domReadyPromise = new Promise( function ( resolve ) {
document.addEventListener( 'DOMContentLoaded', resolve, {
once: true
} );
} );
// Obtain the emoji support from the browser, asynchronously when possible.
new Promise( function ( resolve ) {
var supportTests = getSessionSupportTests();
if ( supportTests ) {
resolve( supportTests );
return;
}
if ( supportsWorkerOffloading() ) {
try {
// Note that the functions are being passed as arguments due to minification.
var workerScript =
'postMessage(' +
testEmojiSupports.toString() +
'(' +
[
JSON.stringify( tests ),
browserSupportsEmoji.toString(),
emojiSetsRenderIdentically.toString(),
emojiRendersEmptyCenterPoint.toString()
].join( ',' ) +
'));';
var blob = new Blob( [ workerScript ], {
type: 'text/javascript'
} );
var worker = new Worker( URL.createObjectURL( blob ), { name: 'wpTestEmojiSupports' } );
worker.onmessage = function ( event ) {
supportTests = event.data;
setSessionSupportTests( supportTests );
worker.terminate();
resolve( supportTests );
};
return;
} catch ( e ) {}
}
supportTests = testEmojiSupports( tests, browserSupportsEmoji, emojiSetsRenderIdentically, emojiRendersEmptyCenterPoint );
setSessionSupportTests( supportTests );
resolve( supportTests );
} )
// Once the browser emoji support has been obtained from the session, finalize the settings.
.then( function ( supportTests ) {
/*
* Tests the browser support for flag emojis and other emojis, and adjusts the
* support settings accordingly.
*/
for ( var test in supportTests ) {
settings.supports[ test ] = supportTests[ test ];
settings.supports.everything =
settings.supports.everything && settings.supports[ test ];
if ( 'flag' !== test ) {
settings.supports.everythingExceptFlag =
settings.supports.everythingExceptFlag &&
settings.supports[ test ];
}
}
settings.supports.everythingExceptFlag =
settings.supports.everythingExceptFlag &&
! settings.supports.flag;
// Sets DOMReady to false and assigns a ready function to settings.
settings.DOMReady = false;
settings.readyCallback = function () {
settings.DOMReady = true;
};
} )
.then( function () {
return domReadyPromise;
} )
.then( function () {
// When the browser can not render everything we need to load a polyfill.
if ( ! settings.supports.everything ) {
settings.readyCallback();
var src = settings.source || {};
if ( src.concatemoji ) {
addScript( src.concatemoji );
} else if ( src.wpemoji && src.twemoji ) {
addScript( src.twemoji );
addScript( src.wpemoji );
}
}
} );
} )( window, document, window._wpemojiSettings );
كتبت شروق عارفمع التطور السريع للتكنولوجيا وتزايد اعتمدنا على الإنترنت في مختلف المجالات برز الطب عن بعد كأحد أهم التحولات في مجال الرعاية الصحية خصوصا بعد جائحة كورونا التي فرضت واقع جديد يحتم علينا العزلة مما دفعنا للبحث عن بدائل أمنة وفعالة للتشخيص والعلاج دون الحاجة لزيارة الطبيب ورغم ما يقدمه الطب عن بعد من من عدة حلول أهمها تقليل النفقات والحد من الازدحام ولكن مع هذا التطور بدأت تظهر تساؤلات مهمة أبرزهم هل يمكن الاعتماد عليه كبديل كامل للفحص التقليدي؟ وهل يضمن دقة التشخيص وكفاءة العلاج؟ أم أنه يظل أداة مساعدة مهمة لكنها لا تغني عن التواصل المباشر مع الطبيب في عيادته؟
الطب عن بعد دعم مكمل لا بديل
صرح أحد الأطباء بأن الطب عن بعد يمكن أن يكون فعالا جدا في بعض الحالات مثل متابعة الأمراض المزمنة أو إعطاء نصائح أولية لكنه لا يمكن أن يحل محل الفحص وتابع حديثه قائلا هناك تفاصيل لا يمكن معرفتها من خلال شاشة الهاتف مثل نبض القلب أو ملامح التعب أو بعض التغيرات وهذه أمور لا تظهر عبر الكاميرا كما وأوضح أن الطب عن بعد ساهم في تقليل الضغط على المستشفيات وساعد في تقليل العدوى لكنه لا يمكن أن يعتمد عليه بشكل أساسي الأسنان لا تفحص عن بعد
من جانبه صرح أحد الأطباء في جراحة الفم والأسنان أن الطب عن بعد لا يصلح في تخصص مثل الأسنان وذلك لاعتمادها الكبير على الفحص اليدوي والرؤية الدقيقة للحالة وأضاف كيف يمكنني أن اشخص التهاب في اللثة أو كسر في السن عبر شاشة هناك تفاصيل لا ترى إلا بالفحص المباشر سواء من خلال الأشعة أو أدوات الكشف الدقيقة وتابع قائلا الطب عن بعد قد يكون مفيد فقط في الاستشارة الأولية أو متابعة بعض الحالات البسيطة بعد العلاج لكن لا يمكن الاعتماد عليه في تشخيص أو وضع خطة علاجية دون معاينة فعلية
وأشار محذرا أن الطب عن بعد في مجال طب الأسنان قد يكون خطر وذلك لأن أي خطأ في التشخيص قد يؤدي إلى مضاعفات صحية للمريض موكدا أن التقنية تظل أداة مساعدة وليست بديلا عن الطبيب
ومن جانبه يؤكد أن التواصل المباشر بين الطبيب والمريض هو عنصر أساسي في طب الأسنان موضح أن بعض الأعراض قد لا تفهم بشكل دقيق إلا من خلال تفاعل مباشر وتابع حديثه قائلا حتى مع توفر صور أو مقاطع فيديو يظل هناك فارق كبير بين ما يرى عبر الشاشة وما يمكن للطبيب ملاحظته أثناء الكشف
ويبقى الطب عن بعد أداة فعالة في تحسين الوصول إلى خدمات الرعاية الصحية لكنه في النهاية يظل وسيلة مساعدة لا تغني عن دور الطبيب والفحص المباشرة
