Come catturare l'intervallo di testo selezionato in iOS dopo l'espansione selezione testo

Question

Sto lavorando a un'app Web che consente a un utente di selezionare del testo, fare clic su un pulsante e salvare il testo evidenziato. Funziona perfettamente con i browser desktop, (Chrome per questo esempio), ma in iOS ho problemi con la selezione del testo nativo, in cui l'utente può modificare il testo selezionato.

Ecco l'JsFiddle che mostra il problema (problema esiste solo in iOS): http://jsfiddle.net/JasonMore/gWZfb/

1. utente inizia la selezione del testo

2. utente espande la selezione del testo, e fa clic su "Visualizza il testo selezionato in precedenza "

3. Solo la prima parola selezionata" il "si presenta, anche se voglio" il Sentiero del righteou s dell'uomo "

1 Begin

2 selezionare il testo e il pulsante colpito

3 solo "la"

Ecco l'JS sto usando:

$(function() { 
    $('#actionButton').click(function() { 
     $('#result').text(selectedRange.toString()); 
    }); 

    $('#slipsum').on('mouseup touchend','p', function() { 
     getSelectedRange(); 
    }); 
}); 

var selectedRange = null; 

var getSelectedRange = function() { 
    if (window.getSelection) { 
     selectedRange = window.getSelection().getRangeAt(0); 
    } else { 
     selectedRange = document.getSelection().getRangeAt(0); 
    } 
};​ 

HTML:

<h3>Selected Text:</h3> 
<p id="result"> 
</p> 
<br/> 
<p> 
    <input type="button" id="actionButton" value="Show the selected text above" /> 
</p> 
<!-- start slipsum code --> 
<div id="slipsum"> 
<h1>Is she dead, yes or no?</h1> 
<p>Do you see any Teletubbies in here? Do you see a slender plastic tag clipped to my shirt with my name printed on it? Do you see a little Asian child with a blank expression on his face sitting outside on a mechanical helicopter that shakes when you put quarters in it? No? Well, that's what you see at a toy store. And you must think you're in a toy store, because you're here shopping for an infant named Jeb. </p> 

<h1>So, you cold?</h1> 
<p>The path of the righteous man is beset on all sides by the iniquities of the selfish and the tyranny of evil men. Blessed is he who, in the name of charity and good will, shepherds the weak through the valley of darkness, for he is truly his brother's keeper and the finder of lost children. And I will strike down upon thee with great vengeance and furious anger those who would attempt to poison and destroy My brothers. And you will know My name is the Lord when I lay My vengeance upon thee. </p> 

<h1>I'm serious as a heart attack</h1> 
<p>Do you see any Teletubbies in here? Do you see a slender plastic tag clipped to my shirt with my name printed on it? Do you see a little Asian child with a blank expression on his face sitting outside on a mechanical helicopter that shakes when you put quarters in it? No? Well, that's what you see at a toy store. And you must think you're in a toy store, because you're here shopping for an infant named Jeb. </p> 

<h1>Is she dead, yes or no?</h1> 
<p>Like you, I used to think the world was this great place where everybody lived by the same standards I did, then some kid with a nail showed me I was living in his world, a world where chaos rules not order, a world where righteousness is not rewarded. That's Cesar's world, and if you're not willing to play by his rules, then you're gonna have to pay the price. </p> 

<h1>Is she dead, yes or no?</h1> 
<p>Your bones don't break, mine do. That's clear. Your cells react to bacteria and viruses differently than mine. You don't get sick, I do. That's also clear. But for some reason, you and I react the exact same way to water. We swallow it too fast, we choke. We get some in our lungs, we drown. However unreal it may seem, we are connected, you and I. We're on the same curve, just on opposite ends. </p> 
</div> 
<!-- please do not remove this line --> 

<div style="display:none;"> 
<a href="http://slipsum.com">lorem ipsum</a></div> 

<!-- end slipsum code --> 
​ 

Answer 1

A chi si imbatte in questo problema in futuro, qui è la risoluzione:

http://jsfiddle.net/JasonMore/gWZfb/

$(function() { 
    $('#actionButton').click(function() { 
     if (selectedRange) { 
      $('#result').text(selectedRange.toString()); 
      clearInterval(timer); 
     } 
    }); 

    timer = setInterval(getSelectedRange, 150); 
}); 

var timer = null; 

var selectedRange = null; 

var getSelectedRange = function() { 
    try { 
     if (window.getSelection) { 
      selectedRange = window.getSelection().getRangeAt(0); 
     } else { 
      selectedRange = document.getSelection().getRangeAt(0); 
     } 
    } catch (err) { 

    } 

};​