mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-11-29 00:30:44 +00:00
8f05cdbf70
Not having a description yet is fine, but they should at least be indexed as blocks so that they are searchable and listed in the jsduck generated pages. jsduck defaults to @method + name of prototype property. And it even guesses parameters sometimes. Search: \n\n([a-zA-Z\.]+\.prototype\.[a-zA-Z]+) Where: modules/ve,modules/ve-mw Where-Not: modules/ve/test Replace: \n\n/** */\n$1 Added @return in a few places where it was easy to add. Change-Id: I830c94cc7dbc261bd7a077391f930cbfff165f9d
777 lines
25 KiB
JavaScript
777 lines
25 KiB
JavaScript
/*!
|
|
* VisualEditor ElementLinearData class.
|
|
*
|
|
* Class containing element linear data and an index-value store.
|
|
*
|
|
* @copyright 2011-2013 VisualEditor Team and others; see AUTHORS.txt
|
|
* @license The MIT License (MIT); see LICENSE.txt
|
|
*/
|
|
|
|
/**
|
|
* Element linear data storage
|
|
*
|
|
* @class
|
|
* @extends ve.dm.LinearData
|
|
* @constructor
|
|
* @param {ve.dm.IndexValueStore} store Index-value store
|
|
* @param {Array} [data] Linear data
|
|
*/
|
|
ve.dm.ElementLinearData = function VeDmElementLinearData( store, data ) {
|
|
ve.dm.LinearData.call( this, store, data );
|
|
};
|
|
|
|
/* Inheritance */
|
|
|
|
ve.inheritClass( ve.dm.ElementLinearData, ve.dm.LinearData );
|
|
|
|
/* Methods */
|
|
|
|
/**
|
|
* Get the type of the element at a specified offset
|
|
* @method
|
|
* @param {number} offset Document offset
|
|
* @returns {string} Type of the element
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.getType = function ( offset ) {
|
|
return ve.dm.LinearData.static.getType( this.getData( offset ) );
|
|
};
|
|
|
|
/**
|
|
* Check if data at a given offset is an element.
|
|
* @method
|
|
* @param {number} offset Document offset
|
|
* @returns {boolean} Data at offset is an element
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.isElementData = function ( offset ) {
|
|
return ve.dm.LinearData.static.isElementData( this.getData( offset ) );
|
|
};
|
|
|
|
/**
|
|
* Checks if data at a given offset is an open element.
|
|
* @method
|
|
* @param {number} offset Document offset
|
|
* @returns {boolean} Data at offset is an open element
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.isOpenElementData = function ( offset ) {
|
|
return ve.dm.LinearData.static.isOpenElementData( this.getData( offset ) );
|
|
};
|
|
|
|
/**
|
|
* Checks if data at a given offset is a close element.
|
|
* @method
|
|
* @param {number} offset Document offset
|
|
* @returns {boolean} Data at offset is a close element
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.isCloseElementData = function ( offset ) {
|
|
return ve.dm.LinearData.static.isCloseElementData( this.getData( offset ) );
|
|
};
|
|
|
|
/**
|
|
* Check if content can be inserted at an offset in document data.
|
|
*
|
|
* This method assumes that any value that has a type property that's a string is an element object.
|
|
*
|
|
* Content offsets:
|
|
* <heading> a </heading> <paragraph> b c <img> </img> </paragraph>
|
|
* . ^ ^ . ^ ^ ^ . ^ .
|
|
*
|
|
* Content offsets:
|
|
* <list> <listItem> </listItem> <list>
|
|
* . . . . .
|
|
*
|
|
* @method
|
|
* @param {number} offset Document offset
|
|
* @returns {boolean} Content can be inserted at offset
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.isContentOffset = function ( offset ) {
|
|
// Edges are never content
|
|
if ( offset === 0 || offset === this.getLength() ) {
|
|
return false;
|
|
}
|
|
var left = this.getData( offset - 1 ),
|
|
right = this.getData( offset ),
|
|
factory = ve.dm.nodeFactory;
|
|
return (
|
|
// Data exists at offsets
|
|
( left !== undefined && right !== undefined ) &&
|
|
(
|
|
// If there's content on the left or the right of the offset than we are good
|
|
// <paragraph>|a|</paragraph>
|
|
( typeof left === 'string' || typeof right === 'string' ) ||
|
|
// Same checks but for annotated characters - isArray is slower, try it next
|
|
( ve.isArray( left ) || ve.isArray( right ) ) ||
|
|
// The most expensive test are last, these deal with elements
|
|
(
|
|
// Right of a leaf
|
|
// <paragraph><image></image>|</paragraph>
|
|
(
|
|
// Is an element
|
|
typeof left.type === 'string' &&
|
|
// Is a closing
|
|
left.type.charAt( 0 ) === '/' &&
|
|
// Is a leaf
|
|
factory.isNodeContent( left.type.substr( 1 ) )
|
|
) ||
|
|
// Left of a leaf
|
|
// <paragraph>|<image></image></paragraph>
|
|
(
|
|
// Is an element
|
|
typeof right.type === 'string' &&
|
|
// Is not a closing
|
|
right.type.charAt( 0 ) !== '/' &&
|
|
// Is a leaf
|
|
factory.isNodeContent( right.type )
|
|
) ||
|
|
// Inside empty content branch
|
|
// <paragraph>|</paragraph>
|
|
(
|
|
// Inside empty element
|
|
'/' + left.type === right.type &&
|
|
// Both are content branches (right is the same type)
|
|
factory.canNodeContainContent( left.type )
|
|
)
|
|
)
|
|
)
|
|
);
|
|
};
|
|
|
|
/**
|
|
* Check if structure can be inserted at an offset in document data.
|
|
*
|
|
* If the {unrestricted} param is true than only offsets where any kind of element can be inserted
|
|
* will return true. This can be used to detect the difference between a location that a paragraph
|
|
* can be inserted, such as between two tables but not direclty inside a table.
|
|
*
|
|
* This method assumes that any value that has a type property that's a string is an element object.
|
|
*
|
|
* Structural offsets (unrestricted = false):
|
|
* <heading> a </heading> <paragraph> b c <img> </img> </paragraph>
|
|
* ^ . . ^ . . . . . ^
|
|
*
|
|
* Structural offsets (unrestricted = true):
|
|
* <heading> a </heading> <paragraph> b c <img> </img> </paragraph>
|
|
* ^ . . ^ . . . . . ^
|
|
*
|
|
* Structural offsets (unrestricted = false):
|
|
* <list> <listItem> </listItem> <list>
|
|
* ^ ^ ^ ^ ^
|
|
*
|
|
* Content branch offsets (unrestricted = true):
|
|
* <list> <listItem> </listItem> <list>
|
|
* ^ . ^ . ^
|
|
*
|
|
* @method
|
|
* @param {number} offset Document offset
|
|
* @param {boolean} [unrestricted] Only return true if any kind of element can be inserted at offset
|
|
* @returns {boolean} Structure can be inserted at offset
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.isStructuralOffset = function ( offset, unrestricted ) {
|
|
// Edges are always structural
|
|
if ( offset === 0 || offset === this.getLength() ) {
|
|
return true;
|
|
}
|
|
// Offsets must be within range and both sides must be elements
|
|
var left = this.getData( offset - 1 ),
|
|
right = this.getData( offset ),
|
|
factory = ve.dm.nodeFactory;
|
|
return (
|
|
(
|
|
left !== undefined &&
|
|
right !== undefined &&
|
|
typeof left.type === 'string' &&
|
|
typeof right.type === 'string'
|
|
) &&
|
|
(
|
|
// Right of a branch
|
|
// <list><listItem><paragraph>a</paragraph>|</listItem>|</list>|
|
|
(
|
|
// Is a closing
|
|
left.type.charAt( 0 ) === '/' &&
|
|
// Is a branch or non-content leaf
|
|
(
|
|
factory.canNodeHaveChildren( left.type.substr( 1 ) ) ||
|
|
!factory.isNodeContent( left.type.substr( 1 ) )
|
|
) &&
|
|
(
|
|
// Only apply this rule in unrestricted mode
|
|
!unrestricted ||
|
|
// Right of an unrestricted branch
|
|
// <list><listItem><paragraph>a</paragraph>|</listItem></list>|
|
|
// Both are non-content branches that can have any kind of child
|
|
factory.getParentNodeTypes( left.type.substr( 1 ) ) === null
|
|
)
|
|
) ||
|
|
// Left of a branch
|
|
// |<list>|<listItem>|<paragraph>a</paragraph></listItem></list>
|
|
(
|
|
// Is not a closing
|
|
right.type.charAt( 0 ) !== '/' &&
|
|
// Is a branch or non-content leaf
|
|
(
|
|
factory.canNodeHaveChildren( right.type ) ||
|
|
!factory.isNodeContent( right.type )
|
|
) &&
|
|
(
|
|
// Only apply this rule in unrestricted mode
|
|
!unrestricted ||
|
|
// Left of an unrestricted branch
|
|
// |<list><listItem>|<paragraph>a</paragraph></listItem></list>
|
|
// Both are non-content branches that can have any kind of child
|
|
factory.getParentNodeTypes( right.type ) === null
|
|
)
|
|
) ||
|
|
// Inside empty non-content branch
|
|
// <list>|</list> or <list><listItem>|</listItem></list>
|
|
(
|
|
// Inside empty element
|
|
'/' + left.type === right.type &&
|
|
// Both are non-content branches (right is the same type)
|
|
factory.canNodeHaveChildrenNotContent( left.type ) &&
|
|
(
|
|
// Only apply this rule in unrestricted mode
|
|
!unrestricted ||
|
|
// Both are non-content branches that can have any kind of child
|
|
factory.getChildNodeTypes( left.type ) === null
|
|
)
|
|
)
|
|
)
|
|
);
|
|
};
|
|
|
|
/**
|
|
* Check for elements in document data.
|
|
*
|
|
* This method assumes that any value that has a type property that's a string is an element object.
|
|
* Elements are discovered by iterating through the entire data array (backwards).
|
|
*
|
|
* @method
|
|
* @returns {boolean} At least one elements exists in data
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.containsElementData = function () {
|
|
var i = this.getLength();
|
|
while ( i-- ) {
|
|
if ( this.getData( i ).type !== undefined ) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
};
|
|
|
|
/**
|
|
* Check for non-content elements in document data.
|
|
*
|
|
* This method assumes that any value that has a type property that's a string is an element object.
|
|
* Elements are discovered by iterating through the entire data array.
|
|
*
|
|
* @method
|
|
* @returns {boolean} True if all elements in data are content elements
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.isContentData = function () {
|
|
var item, i = this.getLength();
|
|
while ( i-- ) {
|
|
item = this.getData( i );
|
|
if ( item.type !== undefined &&
|
|
item.type.charAt( 0 ) !== '/' &&
|
|
!ve.dm.nodeFactory.isNodeContent( item.type )
|
|
) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
};
|
|
|
|
/**
|
|
* Get annotations' store indexes covered by an offset.
|
|
*
|
|
* @method
|
|
* @param {number} offset Offset to get annotations for
|
|
* @returns {number[]} An array of annotation store indexes the offset is covered by
|
|
* @throws {Error} offset out of bounds
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.getAnnotationIndexesFromOffset = function ( offset ) {
|
|
if ( offset < 0 || offset > this.getLength() ) {
|
|
throw new Error( 'offset ' + offset + ' out of bounds' );
|
|
}
|
|
var element = this.getData( offset );
|
|
// Since annotations are not stored on a closing leaf node,
|
|
// rewind offset by 1 to return annotations for that structure
|
|
if (
|
|
ve.isPlainObject( element ) && // structural offset
|
|
element.hasOwnProperty( 'type' ) && // just in case
|
|
element.type.charAt( 0 ) === '/' && // closing offset
|
|
ve.dm.nodeFactory.canNodeHaveChildren(
|
|
element.type.substr( 1 )
|
|
) === false // leaf node
|
|
) {
|
|
offset = this.getRelativeContentOffset( offset, -1 );
|
|
element = this.getData( offset );
|
|
}
|
|
|
|
if ( element === undefined || typeof element === 'string' ) {
|
|
return [];
|
|
} else {
|
|
return element.annotations || element[1] || [];
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Get annotations covered by an offset.
|
|
*
|
|
* The returned AnnotationSet is a clone of the one in the document data.
|
|
*
|
|
* @method
|
|
* @param {number} offset Offset to get annotations for
|
|
* @returns {ve.dm.AnnotationSet} A set of all annotation objects offset is covered by
|
|
* @throws {Error} offset out of bounds
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.getAnnotationsFromOffset = function ( offset ) {
|
|
return new ve.dm.AnnotationSet( this.getStore(), this.getAnnotationIndexesFromOffset( offset ) );
|
|
};
|
|
|
|
/**
|
|
* Set annotations of data at a specified offset.
|
|
*
|
|
* Cleans up data structure if annotation set is empty.
|
|
*
|
|
* @method
|
|
* @param {number} offset Offset to set annotations at
|
|
* @param {ve.dm.AnnotationSet} annotations Annotations to set
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.setAnnotationsAtOffset = function ( offset, annotations ) {
|
|
var character, item = this.getData( offset ), isElement = this.isElementData( offset );
|
|
if ( !annotations.isEmpty() ) {
|
|
if ( isElement ) {
|
|
// New element annotation
|
|
item.annotations = this.getStore().indexes( annotations.get() );
|
|
} else {
|
|
// New character annotation
|
|
character = this.getCharacterData( offset );
|
|
this.setData( offset, [character, this.getStore().indexes( annotations.get() )] );
|
|
}
|
|
} else {
|
|
if ( isElement ) {
|
|
// Cleanup empty element annotation
|
|
delete item.annotations;
|
|
} else {
|
|
// Cleanup empty character annotation
|
|
character = this.getCharacterData( offset );
|
|
this.setData( offset, character );
|
|
}
|
|
}
|
|
};
|
|
|
|
/** */
|
|
ve.dm.ElementLinearData.prototype.getCharacterData = function ( offset ) {
|
|
var item = this.getData( offset );
|
|
return ve.isArray( item ) ? item[0] : item;
|
|
};
|
|
|
|
/**
|
|
* Gets the range of content surrounding a given offset that's covered by a given annotation.
|
|
*
|
|
* @method
|
|
* @param {number} offset Offset to begin looking forward and backward from
|
|
* @param {Object} annotation Annotation to test for coverage with
|
|
* @returns {ve.Range|null} Range of content covered by annotation, or null if offset is not covered
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.getAnnotatedRangeFromOffset = function ( offset, annotation ) {
|
|
var start = offset,
|
|
end = offset;
|
|
if ( this.getAnnotationsFromOffset( offset ).contains( annotation ) === false ) {
|
|
return null;
|
|
}
|
|
while ( start > 0 ) {
|
|
start--;
|
|
if ( this.getAnnotationsFromOffset( start ).contains( annotation ) === false ) {
|
|
start++;
|
|
break;
|
|
}
|
|
}
|
|
while ( end < this.getLength() ) {
|
|
if ( this.getAnnotationsFromOffset( end ).contains( annotation ) === false ) {
|
|
break;
|
|
}
|
|
end++;
|
|
}
|
|
return new ve.Range( start, end );
|
|
};
|
|
|
|
|
|
/**
|
|
* Get the range of an annotation found within a range.
|
|
*
|
|
* @method
|
|
* @param {number} offset Offset to begin looking forward and backward from
|
|
* @param {ve.dm.Annotation} annotation Annotation to test for coverage with
|
|
* @returns {ve.Range|null} Range of content covered by annotation, or a copy of the range
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.getAnnotatedRangeFromSelection = function ( range, annotation ) {
|
|
var start = range.start,
|
|
end = range.end;
|
|
while ( start > 0 ) {
|
|
start--;
|
|
if ( this.getAnnotationsFromOffset( start ).contains( annotation ) === false ) {
|
|
start++;
|
|
break;
|
|
}
|
|
}
|
|
while ( end < this.getLength() ) {
|
|
if ( this.getAnnotationsFromOffset( end ).contains( annotation ) === false ) {
|
|
break;
|
|
}
|
|
end++;
|
|
}
|
|
return new ve.Range( start, end );
|
|
};
|
|
|
|
/**
|
|
* Get annotations common to all content in a range.
|
|
*
|
|
* @method
|
|
* @param {ve.Range} range Range to get annotations for
|
|
* @param {boolean} [all] Get all annotations found within the range, not just those that cover it
|
|
* @returns {ve.dm.AnnotationSet} All annotation objects range is covered by
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.getAnnotationsFromRange = function ( range, all ) {
|
|
var i,
|
|
left,
|
|
right;
|
|
// Look at left side of range for annotations
|
|
left = this.getAnnotationsFromOffset( range.start );
|
|
// Shortcut for single character and zero-length ranges
|
|
if ( range.getLength() === 0 || range.getLength() === 1 ) {
|
|
return left;
|
|
}
|
|
// Iterator over the range, looking for annotations, starting at the 2nd character
|
|
for ( i = range.start + 1; i < range.end; i++ ) {
|
|
// Skip non character data
|
|
if ( this.isElementData( i ) ) {
|
|
continue;
|
|
}
|
|
// Current character annotations
|
|
right = this.getAnnotationsFromOffset( i );
|
|
if ( all && !right.isEmpty() ) {
|
|
left.addSet( right );
|
|
} else if ( !all ) {
|
|
// A non annotated character indicates there's no full coverage
|
|
if ( right.isEmpty() ) {
|
|
return new ve.dm.AnnotationSet( this.getStore() );
|
|
}
|
|
// Exclude annotations that are in left but not right
|
|
left.removeNotInSet( right );
|
|
// If we've reduced left down to nothing, just stop looking
|
|
if ( left.isEmpty() ) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return left;
|
|
};
|
|
|
|
/**
|
|
* Get a range without any whitespace content at the beginning and end.
|
|
*
|
|
* @method
|
|
* @param {ve.Range} [range] Range of data to get, all data will be given by default
|
|
* @returns {Object} A new range if modified, otherwise returns passed range
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.trimOuterSpaceFromRange = function ( range ) {
|
|
var start = range.start,
|
|
end = range.end;
|
|
while ( this.getCharacterData( end - 1 ) === ' ' ) {
|
|
end--;
|
|
}
|
|
while ( start < end && this.getCharacterData( start ) === ' ' ) {
|
|
start++;
|
|
}
|
|
return range.to < range.end ? new ve.Range( end, start ) : new ve.Range( start, end );
|
|
};
|
|
|
|
/**
|
|
* Get an offset at a distance to an offset that passes a validity test.
|
|
*
|
|
* - If {offset} is not already valid, one step will be used to move it to a valid one.
|
|
* - If {offset} is already valid and cannot be moved in the direction of {distance} and still be
|
|
* valid, it will be left where it is
|
|
* - If {distance} is zero the result will either be {offset} if it's already valid or the
|
|
* nearest valid offset to the right if possible and to the left otherwise.
|
|
* - If {offset} is after the last valid offset and {distance} is >= 1, or if {offset} if
|
|
* before the first valid offset and {distance} <= 1 than the result will be the nearest
|
|
* valid offset in the opposite direction.
|
|
* - If the document does not contain a single valid offset the result will be -1
|
|
*
|
|
* @method
|
|
* @param {number} offset Offset to start from
|
|
* @param {number} distance Number of valid offsets to move
|
|
* @param {Function} callback Function to call to check if an offset is valid which will be
|
|
* given initial argument of offset
|
|
* @param {Mixed...} [args] Additional arguments to pass to the callback
|
|
* @returns {number} Relative valid offset or -1 if there are no valid offsets in document
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.getRelativeOffset = function ( offset, distance, callback ) {
|
|
var i, direction,
|
|
args = Array.prototype.slice.call( arguments, 3 ),
|
|
start = offset,
|
|
steps = 0,
|
|
turnedAround = false;
|
|
// If offset is already a structural offset and distance is zero than no further work is needed,
|
|
// otherwise distance should be 1 so that we can get out of the invalid starting offset
|
|
if ( distance === 0 ) {
|
|
if ( callback.apply( this, [offset].concat( args ) ) ) {
|
|
return offset;
|
|
} else {
|
|
distance = 1;
|
|
}
|
|
}
|
|
// Initial values
|
|
direction = (
|
|
offset <= 0 ? 1 : (
|
|
offset >= this.getLength() ? -1 : (
|
|
distance > 0 ? 1 : -1
|
|
)
|
|
)
|
|
);
|
|
distance = Math.abs( distance );
|
|
i = start + direction;
|
|
offset = -1;
|
|
// Iteration
|
|
while ( i >= 0 && i <= this.getLength() ) {
|
|
if ( callback.apply( this, [i].concat( args ) ) ) {
|
|
steps++;
|
|
offset = i;
|
|
if ( distance === steps ) {
|
|
return offset;
|
|
}
|
|
} else if (
|
|
// Don't keep turning around over and over
|
|
!turnedAround &&
|
|
// Only turn around if not a single step could be taken
|
|
steps === 0 &&
|
|
// Only turn around if we're about to reach the edge
|
|
( ( direction < 0 && i === 0 ) || ( direction > 0 && i === this.getLength() ) )
|
|
) {
|
|
// Before we turn around, let's see if we are at a valid position
|
|
if ( callback.apply( this, [start].concat( args ) ) ) {
|
|
// Stay where we are
|
|
return start;
|
|
}
|
|
// Start over going in the opposite direction
|
|
direction *= -1;
|
|
i = start;
|
|
distance = 1;
|
|
turnedAround = true;
|
|
}
|
|
i += direction;
|
|
}
|
|
return offset;
|
|
};
|
|
|
|
/**
|
|
* Get a content offset at a distance from an offset.
|
|
*
|
|
* This method is a wrapper around {getRelativeOffset}, using {ve.dm.Document.isContentOffset} as
|
|
* the offset validation callback.
|
|
*
|
|
* @method
|
|
* @param {number} offset Offset to start from
|
|
* @param {number} distance Number of content offsets to move
|
|
* @returns {number} Relative content offset or -1 if there are no valid offsets in document
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.getRelativeContentOffset = function ( offset, distance ) {
|
|
return this.getRelativeOffset( offset, distance, this.constructor.prototype.isContentOffset );
|
|
};
|
|
|
|
/**
|
|
* Get the nearest content offset to an offset.
|
|
*
|
|
* If the offset is already a valid offset, it will be returned unchanged. This method differs from
|
|
* calling {getRelativeContentOffset} with a zero length difference because the direction can be
|
|
* controlled without necessarily moving the offset if it's already valid. Also, if the direction
|
|
* is 0 or undefined than nearest offsets will be found to the left and right and the one with the
|
|
* shortest distance will be used.
|
|
*
|
|
* This method is a wrapper around {getRelativeOffset}, using {this.isContentOffset} as
|
|
* the offset validation callback.
|
|
*
|
|
* @method
|
|
* @param {number} offset Offset to start from
|
|
* @param {number} [direction] Direction to prefer matching offset in, -1 for left and 1 for right
|
|
* @returns {number} Nearest content offset or -1 if there are no valid offsets in document
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.getNearestContentOffset = function ( offset, direction ) {
|
|
if ( this.isContentOffset( offset ) ) {
|
|
return offset;
|
|
}
|
|
if ( direction === undefined ) {
|
|
var left = this.getRelativeOffset( offset, -1, this.constructor.prototype.isContentOffset ),
|
|
right = this.getRelativeOffset( offset, 1, this.constructor.prototype.isContentOffset );
|
|
return offset - left < right - offset ? left : right;
|
|
} else {
|
|
return this.getRelativeOffset(
|
|
offset, direction > 0 ? 1 : -1, this.constructor.prototype.isContentOffset
|
|
);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Get a structural offset at a distance from an offset.
|
|
*
|
|
* This method is a wrapper around {getRelativeOffset}, using {this.isStructuralOffset} as
|
|
* the offset validation callback.
|
|
*
|
|
* @method
|
|
* @param {number} offset Offset to start from
|
|
* @param {number} distance Number of structural offsets to move
|
|
* @param {boolean} [unrestricted] Only consider offsets where any kind of element can be inserted
|
|
* @returns {number} Relative structural offset
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.getRelativeStructuralOffset = function ( offset, distance, unrestricted ) {
|
|
// Optimization: start and end are always unrestricted structural offsets
|
|
if ( distance === 0 && ( offset === 0 || offset === this.getLength() ) ) {
|
|
return offset;
|
|
}
|
|
return this.getRelativeOffset(
|
|
offset, distance, this.constructor.prototype.isStructuralOffset, unrestricted
|
|
);
|
|
};
|
|
|
|
/**
|
|
* Get the nearest structural offset to an offset.
|
|
*
|
|
* If the offset is already a valid offset, it will be returned unchanged. This method differs from
|
|
* calling {getRelativeStructuralOffset} with a zero length difference because the direction can be
|
|
* controlled without necessarily moving the offset if it's already valid. Also, if the direction
|
|
* is 0 or undefined than nearest offsets will be found to the left and right and the one with the
|
|
* shortest distance will be used.
|
|
*
|
|
* This method is a wrapper around {getRelativeOffset}, using {this.isStructuralOffset} as
|
|
* the offset validation callback.
|
|
*
|
|
* @method
|
|
* @param {number} offset Offset to start from
|
|
* @param {number} [direction] Direction to prefer matching offset in, -1 for left and 1 for right
|
|
* @param {boolean} [unrestricted] Only consider offsets where any kind of element can be inserted
|
|
* @returns {number} Nearest structural offset
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.getNearestStructuralOffset = function ( offset, direction, unrestricted ) {
|
|
if ( this.isStructuralOffset( offset, unrestricted ) ) {
|
|
return offset;
|
|
}
|
|
if ( !direction ) {
|
|
var left = this.getRelativeOffset(
|
|
offset, -1, this.constructor.prototype.isStructuralOffset, unrestricted
|
|
),
|
|
right = this.getRelativeOffset(
|
|
offset, 1, this.constructor.prototype.isStructuralOffset, unrestricted
|
|
);
|
|
return offset - left < right - offset ? left : right;
|
|
} else {
|
|
return this.getRelativeOffset(
|
|
offset, direction > 0 ? 1 : -1, this.constructor.prototype.isStructuralOffset, unrestricted
|
|
);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Get the nearest word boundaries as a range.
|
|
*
|
|
* The offset will first be moved to the nearest content offset if it's not at one already.
|
|
* Elements are always word boundaries.
|
|
*
|
|
* @method
|
|
* @param {number} offset Offset to start from
|
|
* @returns {ve.Range} Range around nearest word boundaries
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.getNearestWordRange = function ( offset ) {
|
|
var offsetLeft, offsetRight,
|
|
dataString = new ve.dm.DataString( this.getData() );
|
|
|
|
offset = this.getNearestContentOffset( offset );
|
|
|
|
// If the cursor offset is a break (i.e. the start/end of word) we should
|
|
// check one position either side to see if there is a non-break
|
|
// and if so, move the offset accordingly
|
|
if ( unicodeJS.wordbreak.isBreak( dataString, offset ) ) {
|
|
if ( !unicodeJS.wordbreak.isBreak( dataString, offset + 1 ) ) {
|
|
offset++;
|
|
} else if ( !unicodeJS.wordbreak.isBreak( dataString, offset - 1 ) ) {
|
|
offset--;
|
|
} else {
|
|
return new ve.Range( offset );
|
|
}
|
|
}
|
|
|
|
offsetRight = unicodeJS.wordbreak.nextBreakOffset( dataString, offset );
|
|
offsetLeft = unicodeJS.wordbreak.prevBreakOffset( dataString, offset );
|
|
|
|
return new ve.Range( offsetLeft, offsetRight );
|
|
};
|
|
|
|
/**
|
|
* Finds all instances of items being stored in the index-value store for this data store
|
|
*
|
|
* Currently this is just all annotations still in use.
|
|
*
|
|
* @method
|
|
* @returns {Object} Object containing all store values, indexed by store index
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.getUsedStoreValues = function () {
|
|
var i, indexes, j, valueStore = {};
|
|
i = this.getLength();
|
|
while ( i-- ) {
|
|
// Annotations
|
|
indexes = this.getAnnotationIndexesFromOffset( i );
|
|
j = indexes.length;
|
|
while ( j-- ) {
|
|
// Just flag item as in use for now - we will add its value
|
|
// in a separate loop to avoid multiple store lookups
|
|
valueStore[indexes[j]] = true;
|
|
}
|
|
}
|
|
for ( i in valueStore ) {
|
|
// Fill in actual store values
|
|
valueStore[i] = this.getStore().value( i );
|
|
}
|
|
return valueStore;
|
|
};
|
|
|
|
/**
|
|
* Remap the store indexes used in this linear data.
|
|
*
|
|
* Remaps annotations and calls remapStoreIndexes() on each node.
|
|
*
|
|
* @method
|
|
* @param {Object} mapping Mapping from store indexes to store indexes
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.remapStoreIndexes = function ( mapping ) {
|
|
var i, ilen, j, jlen, indexes, nodeClass;
|
|
for ( i = 0, ilen = this.data.length; i < ilen; i++ ) {
|
|
indexes = this.getAnnotationIndexesFromOffset( i ); // returns by reference
|
|
for ( j = 0, jlen = indexes.length; j < jlen; j++ ) {
|
|
indexes[j] = mapping[indexes[j]];
|
|
}
|
|
if ( this.isOpenElementData( i ) ) {
|
|
nodeClass = ve.dm.nodeFactory.lookup( this.getType( i ) );
|
|
nodeClass.static.remapStoreIndexes( this.data[i], mapping );
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Remap the internal list indexes used in this linear data.
|
|
*
|
|
* Calls remapInternalListIndexes() for each node.
|
|
*
|
|
* @method
|
|
* @param {Object} mapping Mapping from internal list indexes to internal list indexes
|
|
*/
|
|
ve.dm.ElementLinearData.prototype.remapInteralListIndexes = function ( mapping ) {
|
|
var i, ilen, nodeClass;
|
|
for ( i = 0, ilen = this.data.length; i < ilen; i++ ) {
|
|
if ( this.isOpenElementData( i ) ) {
|
|
nodeClass = ve.dm.nodeFactory.lookup( this.getType( i ) );
|
|
nodeClass.static.remapInternalListIndexes( this.data[i], mapping );
|
|
}
|
|
}
|
|
};
|