* - {@link jQuery.plugin.textSelection#getContents getContents}
* - {@link jQuery.plugin.textSelection#setContents setContents}
* - {@link jQuery.plugin.textSelection#getSelection getSelection}
+ * - {@link jQuery.plugin.textSelection#replaceSelection replaceSelection}
* - {@link jQuery.plugin.textSelection#encapsulateSelection encapsulateSelection}
* - {@link jQuery.plugin.textSelection#getCaretPosition getCaretPosition}
* - {@link jQuery.plugin.textSelection#setSelection setSelection}
*
* @private
* @param {string} content
+ * @return {jQuery}
+ * @chainable
*/
setContents: function ( content ) {
- this.val( content );
+ return this.each( function () {
+ var scrollTop = this.scrollTop;
+ $( this ).val( content );
+ // Setting this.value may scroll the textarea, restore the scroll position
+ this.scrollTop = scrollTop;
+ } );
},
/**
var retval,
el = this.get( 0 );
- if ( !el || $( el ).is( ':hidden' ) ) {
+ if ( !el ) {
retval = '';
- } else if ( el.selectionStart || el.selectionStart === 0 ) {
+ } else {
retval = el.value.substring( el.selectionStart, el.selectionEnd );
}
return retval;
},
+ /**
+ * Replace the selected text in the textarea with the given text, or insert it at the cursor.
+ *
+ * @private
+ * @param {string} value
+ * @return {jQuery}
+ * @chainable
+ */
+ replaceSelection: function ( value ) {
+ return this.each( function () {
+ var allText, currSelection, startPos, endPos;
+
+ allText = $( this ).textSelection( 'getContents' );
+ currSelection = $( this ).textSelection( 'getCaretPosition', { startAndEnd: true } );
+ startPos = currSelection[ 0 ];
+ endPos = currSelection[ 1 ];
+
+ $( this ).textSelection( 'setContents', allText.slice( 0, startPos ) + value +
+ allText.slice( endPos ) );
+ $( this ).textSelection( 'setSelection', {
+ start: startPos,
+ end: startPos + value.length
+ } );
+ } );
+ },
+
/**
* Insert text at the beginning and end of a text selection, optionally
* inserting text at the caret when selection is empty.
*/
encapsulateSelection: function ( options ) {
return this.each( function () {
- var selText, scrollTop, insertText,
+ var selText, allText, currSelection, insertText,
+ combiningCharSelectionBug = false,
isSample, startPos, endPos,
pre = options.pre,
post = options.post;
}
isSample = false;
- // Do nothing if display none
- if ( this.style.display !== 'none' ) {
- if ( this.selectionStart || this.selectionStart === 0 ) {
- $( this ).focus();
- if ( options.selectionStart !== undefined ) {
- $( this ).textSelection( 'setSelection', { start: options.selectionStart, end: options.selectionEnd } );
- }
+ $( this ).focus();
+ if ( options.selectionStart !== undefined ) {
+ $( this ).textSelection( 'setSelection', { start: options.selectionStart, end: options.selectionEnd } );
+ }
- selText = $( this ).textSelection( 'getSelection' );
- startPos = this.selectionStart;
- endPos = this.selectionEnd;
- scrollTop = this.scrollTop;
- checkSelectedText();
- if (
- options.selectionStart !== undefined &&
- endPos - startPos !== options.selectionEnd - options.selectionStart
- ) {
- // This means there is a difference in the selection range returned by browser and what we passed.
- // This happens for Chrome in the case of composite characters. Ref bug #30130
- // Set the startPos to the correct position.
- startPos = options.selectionStart;
- }
+ selText = $( this ).textSelection( 'getSelection' );
+ allText = $( this ).textSelection( 'getContents' );
+ currSelection = $( this ).textSelection( 'getCaretPosition', { startAndEnd: true } );
+ startPos = currSelection[ 0 ];
+ endPos = currSelection[ 1 ];
+ checkSelectedText();
+ if (
+ options.selectionStart !== undefined &&
+ endPos - startPos !== options.selectionEnd - options.selectionStart
+ ) {
+ // This means there is a difference in the selection range returned by browser and what we passed.
+ // This happens for Safari 5.1, Chrome 12 in the case of composite characters. Ref T32130
+ // Set the startPos to the correct position.
+ startPos = options.selectionStart;
+ combiningCharSelectionBug = true;
+ // TODO: The comment above is from 2011. Is this still a problem for browsers we support today?
+ // Minimal test case: https://jsfiddle.net/z4q7a2ko/
+ }
- insertText = pre + selText + post;
- if ( options.splitlines ) {
- insertText = doSplitLines( selText, pre, post );
- }
- if ( options.ownline ) {
- if ( startPos !== 0 && this.value.charAt( startPos - 1 ) !== '\n' && this.value.charAt( startPos - 1 ) !== '\r' ) {
- insertText = '\n' + insertText;
- pre += '\n';
- }
- if ( this.value.charAt( endPos ) !== '\n' && this.value.charAt( endPos ) !== '\r' ) {
- insertText += '\n';
- post += '\n';
- }
- }
- this.value = this.value.slice( 0, startPos ) + insertText +
- this.value.slice( endPos );
- // Setting this.value scrolls the textarea to the top, restore the scroll position
- this.scrollTop = scrollTop;
- if ( window.opera ) {
- pre = pre.replace( /\r?\n/g, '\r\n' );
- selText = selText.replace( /\r?\n/g, '\r\n' );
- post = post.replace( /\r?\n/g, '\r\n' );
- }
- if ( isSample && options.selectPeri && ( !options.splitlines || ( options.splitlines && selText.indexOf( '\n' ) === -1 ) ) ) {
- this.selectionStart = startPos + pre.length;
- this.selectionEnd = startPos + pre.length + selText.length;
- } else {
- this.selectionStart = startPos + insertText.length;
- this.selectionEnd = this.selectionStart;
- }
+ insertText = pre + selText + post;
+ if ( options.splitlines ) {
+ insertText = doSplitLines( selText, pre, post );
+ }
+ if ( options.ownline ) {
+ if ( startPos !== 0 && allText.charAt( startPos - 1 ) !== '\n' && allText.charAt( startPos - 1 ) !== '\r' ) {
+ insertText = '\n' + insertText;
+ pre += '\n';
+ }
+ if ( allText.charAt( endPos ) !== '\n' && allText.charAt( endPos ) !== '\r' ) {
+ insertText += '\n';
+ post += '\n';
}
}
+ if ( combiningCharSelectionBug ) {
+ $( this ).textSelection( 'setContents', allText.slice( 0, startPos ) + insertText +
+ allText.slice( endPos ) );
+ } else {
+ $( this ).textSelection( 'replaceSelection', insertText );
+ }
+ if ( isSample && options.selectPeri && ( !options.splitlines || ( options.splitlines && selText.indexOf( '\n' ) === -1 ) ) ) {
+ $( this ).textSelection( 'setSelection', {
+ start: startPos + pre.length,
+ end: startPos + pre.length + selText.length
+ } );
+ } else {
+ $( this ).textSelection( 'setSelection', {
+ start: startPos + insertText.length
+ } );
+ }
$( this ).trigger( 'encapsulateSelection', [ options.pre, options.peri, options.post, options.ownline,
options.replace, options.splitlines ] );
} );
function getCaret( e ) {
var caretPos = 0,
endPos = 0;
-
- if ( e && ( e.selectionStart || e.selectionStart === 0 ) ) {
+ if ( e ) {
caretPos = e.selectionStart;
endPos = e.selectionEnd;
}
*/
setSelection: function ( options ) {
return this.each( function () {
- // Do nothing if hidden
- if ( !$( this ).is( ':hidden' ) ) {
- if ( this.selectionStart || this.selectionStart === 0 ) {
- // Opera 9.0 doesn't allow setting selectionStart past
- // selectionEnd; any attempts to do that will be ignored
- // Make sure to set them in the right order
- if ( options.start > this.selectionEnd ) {
- this.selectionEnd = options.end;
- this.selectionStart = options.start;
- } else {
- this.selectionStart = options.start;
- this.selectionEnd = options.end;
- }
- }
+ // Opera 9.0 doesn't allow setting selectionStart past
+ // selectionEnd; any attempts to do that will be ignored
+ // Make sure to set them in the right order
+ if ( options.start > this.selectionEnd ) {
+ this.selectionEnd = options.end;
+ this.selectionStart = options.start;
+ } else {
+ this.selectionStart = options.start;
+ this.selectionEnd = options.end;
}
} );
},
* @chainable
*/
scrollToCaretPosition: function ( options ) {
- function getLineLength( e ) {
- return Math.floor( e.scrollWidth / ( $.client.profile().platform === 'linux' ? 7 : 8 ) );
- }
- function getCaretScrollPosition( e ) {
- // FIXME: This functions sucks and is off by a few lines most
- // of the time. It should be replaced by something decent.
- var i, j,
- nextSpace,
- text = e.value.replace( /\r/g, '' ),
- caret = $( e ).textSelection( 'getCaretPosition' ),
- lineLength = getLineLength( e ),
- row = 0,
- charInLine = 0,
- lastSpaceInLine = 0;
-
- for ( i = 0; i < caret; i++ ) {
- charInLine++;
- if ( text.charAt( i ) === ' ' ) {
- lastSpaceInLine = charInLine;
- } else if ( text.charAt( i ) === '\n' ) {
- lastSpaceInLine = 0;
- charInLine = 0;
- row++;
- }
- if ( charInLine > lineLength ) {
- if ( lastSpaceInLine > 0 ) {
- charInLine = charInLine - lastSpaceInLine;
- lastSpaceInLine = 0;
- row++;
- }
- }
- }
- nextSpace = 0;
- for ( j = caret; j < caret + lineLength; j++ ) {
- if (
- text.charAt( j ) === ' ' ||
- text.charAt( j ) === '\n' ||
- caret === text.length
- ) {
- nextSpace = j;
- break;
- }
- }
- if ( nextSpace > lineLength && caret <= lineLength ) {
- charInLine = caret - lastSpaceInLine;
- row++;
- }
- return ( $.client.profile().platform === 'mac' ? 13 : ( $.client.profile().platform === 'linux' ? 15 : 16 ) ) * row;
- }
return this.each( function () {
- var scroll;
- // Do nothing if hidden
- if ( !$( this ).is( ':hidden' ) ) {
- if ( this.selectionStart || this.selectionStart === 0 ) {
- scroll = getCaretScrollPosition( this );
- if ( options.force || scroll < $( this ).scrollTop() ||
- scroll > $( this ).scrollTop() + $( this ).height() ) {
- $( this ).scrollTop( scroll );
- }
+ var
+ clientHeight = this.clientHeight,
+ origValue = this.value,
+ origSelectionStart = this.selectionStart,
+ origSelectionEnd = this.selectionEnd,
+ origScrollTop = this.scrollTop,
+ calcScrollTop;
+
+ // Delete all text after the selection and scroll the textarea to the end.
+ // This ensures the selection is visible (aligned to the bottom of the textarea).
+ // Then restore the text we deleted without changing scroll position.
+ this.value = this.value.slice( 0, this.selectionEnd );
+ this.scrollTop = this.scrollHeight;
+ // Chrome likes to adjust scroll position when changing value, so save and re-set later.
+ // Note that this is not equal to scrollHeight, it's scrollHeight minus clientHeight.
+ calcScrollTop = this.scrollTop;
+ this.value = origValue;
+ this.selectionStart = origSelectionStart;
+ this.selectionEnd = origSelectionEnd;
+
+ if ( !options.force ) {
+ // Check if all the scrolling was unnecessary and if so, restore previous position.
+ // If the current position is no more than a screenful above the original,
+ // the selection was previously visible on the screen.
+ if ( calcScrollTop < origScrollTop && origScrollTop - calcScrollTop < clientHeight ) {
+ calcScrollTop = origScrollTop;
}
}
+
+ this.scrollTop = calcScrollTop;
+
$( this ).trigger( 'scrollToPosition' );
} );
}
// case 'getContents': // no params
// case 'setContents': // no params with defaults
// case 'getSelection': // no params
+ // case 'replaceSelection': // no params with defaults
case 'encapsulateSelection':
options = $.extend( {
pre: '',
dépôts / lhc / web / wiklou.git / blobdiff