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Fix 2772. Skipping line marker when applying attribs to a range

This commit is contained in:
Luiza Pagliari 2015-09-08 11:55:36 -03:00
parent 92798f21e8
commit 330d2b079d
2 changed files with 108 additions and 48 deletions
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153
src/static/js/AttributeManager.js
View File

@ -4,23 +4,23 @@ var _ = require('./underscore');
var lineMarkerAttribute = 'lmkr';
// If one of these attributes are set to the first character of a
// If one of these attributes are set to the first character of a
// line it is considered as a line attribute marker i.e. attributes
// set on this marker are applied to the whole line.
// set on this marker are applied to the whole line.
// The list attribute is only maintained for compatibility reasons
var lineAttributes = [lineMarkerAttribute,'list'];
/*
The Attribute manager builds changesets based on a document
The Attribute manager builds changesets based on a document
representation for setting and removing range or line-based attributes.
@param rep the document representation to be used
@param applyChangesetCallback this callback will be called
@param applyChangesetCallback this callback will be called
once a changeset has been built.
A document representation contains
- an array `alines` containing 1 attributes string for each line
A document representation contains
- an array `alines` containing 1 attributes string for each line
- an Attribute pool `apool`
- a SkipList `lines` containing the text lines of the document.
*/
@ -30,7 +30,7 @@ var AttributeManager = function(rep, applyChangesetCallback)
this.rep = rep;
this.applyChangesetCallback = applyChangesetCallback;
this.author = '';
// If the first char in a line has one of the following attributes
// it will be considered as a line marker
};
@ -38,49 +38,106 @@ var AttributeManager = function(rep, applyChangesetCallback)
AttributeManager.lineAttributes = lineAttributes;
AttributeManager.prototype = _(AttributeManager.prototype).extend({
applyChangeset: function(changeset){
if(!this.applyChangesetCallback) return changeset;
var cs = changeset.toString();
if (!Changeset.isIdentity(cs))
{
this.applyChangesetCallback(cs);
}
return changeset;
},
/*
Sets attributes on a range
@param start [row, col] tuple pointing to the start of the range
@param end [row, col] tuple pointing to the end of the range
@param attribute: an array of attributes
@param attribs: an array of attributes
*/
setAttributesOnRange: function(start, end, attribs)
{
var builder = Changeset.builder(this.rep.lines.totalWidth());
ChangesetUtils.buildKeepToStartOfRange(this.rep, builder, start);
ChangesetUtils.buildKeepRange(this.rep, builder, start, end, attribs, this.rep.apool);
return this.applyChangeset(builder);
// instead of applying the attributes to the whole range at once, we need to apply them
// line by line, to be able to disregard the "*" used as line marker. For more details,
// see https://github.com/ether/etherpad-lite/issues/2772
var allChangesets;
for(var row = start[0]; row <= end[0]; row++) {
var rowRange = this._findRowRange(row, start, end);
var startCol = rowRange[0];
var endCol = rowRange[1];
var rowChangeset = this._setAttributesOnRangeByLine(row, startCol, endCol, attribs);
// compose changesets of all rows into a single changeset, as the range might not be continuous
// due to the presence of line markers on the rows
if (allChangesets) {
allChangesets = Changeset.compose(allChangesets.toString(), rowChangeset.toString(), this.rep.apool);
} else {
allChangesets = rowChangeset;
}
}
return this.applyChangeset(allChangesets);
},
/*
_findRowRange: function(row, start, end)
{
var startCol, endCol;
var startLineOffset = this.rep.lines.offsetOfIndex(row);
var endLineOffset = this.rep.lines.offsetOfIndex(row+1);
var lineLength = endLineOffset - startLineOffset;
// find column where range on this row starts
if (row === start[0]) { // are we on the first row of range?
startCol = start[1];
} else {
startCol = this.lineHasMarker(row) ? 1 : 0; // remove "*" used as line marker
}
// find column where range on this row ends
if (row === end[0]) { // are we on the last row of range?
endCol = end[1]; // if so, get the end of range, not end of row
} else {
endCol = lineLength - 1; // remove "\n"
}
return [startCol, endCol];
},
/*
Sets attributes on a range, by line
@param row the row where range is
@param startCol column where range starts
@param endCol column where range ends
@param attribs: an array of attributes
*/
_setAttributesOnRangeByLine: function(row, startCol, endCol, attribs)
{
var builder = Changeset.builder(this.rep.lines.totalWidth());
ChangesetUtils.buildKeepToStartOfRange(this.rep, builder, [row, startCol]);
ChangesetUtils.buildKeepRange(this.rep, builder, [row, startCol], [row, endCol], attribs, this.rep.apool);
return builder;
},
/*
Returns if the line already has a line marker
@param lineNum: the number of the line
*/
lineHasMarker: function(lineNum){
var that = this;
return _.find(lineAttributes, function(attribute){
return that.getAttributeOnLine(lineNum, attribute) != '';
return that.getAttributeOnLine(lineNum, attribute) != '';
}) !== undefined;
},
/*
Gets a specified attribute on a line
@param lineNum: the number of the line to set the attribute for
@param attributeKey: the name of the attribute to get, e.g. list
@param attributeKey: the name of the attribute to get, e.g. list
*/
getAttributeOnLine: function(lineNum, attributeName){
// get `attributeName` attribute of first char of line
@ -95,10 +152,10 @@ AttributeManager.prototype = _(AttributeManager.prototype).extend({
}
return '';
},
/*
Gets all attributes on a line
@param lineNum: the number of the line to get the attribute for
@param lineNum: the number of the line to get the attribute for
*/
getAttributesOnLine: function(lineNum){
// get attributes of first char of line
@ -112,7 +169,7 @@ AttributeManager.prototype = _(AttributeManager.prototype).extend({
{
op = opIter.next()
if(!op.attribs) return []
Changeset.eachAttribNumber(op.attribs, function(n) {
attributes.push([this.rep.apool.getAttribKey(n), this.rep.apool.getAttribValue(n)])
}.bind(this))
@ -121,33 +178,33 @@ AttributeManager.prototype = _(AttributeManager.prototype).extend({
}
return [];
},
/*
Gets all attributes at a position containing line number and column
@param lineNumber starting with zero
@param column starting with zero
returns a list of attributes in the format
returns a list of attributes in the format
[ ["key","value"], ["key","value"], ... ]
*/
getAttributesOnPosition: function(lineNumber, column){
// get all attributes of the line
var aline = this.rep.alines[lineNumber];
if (!aline) {
return [];
}
// iterate through all operations of a line
var opIter = Changeset.opIterator(aline);
// we need to sum up how much characters each operations take until the wanted position
var currentPointer = 0;
var attributes = [];
var attributes = [];
var currentOperation;
while (opIter.hasNext()) {
currentOperation = opIter.next();
currentPointer = currentPointer + currentOperation.chars;
currentPointer = currentPointer + currentOperation.chars;
if (currentPointer > column) {
// we got the operation of the wanted position, now collect all its attributes
Changeset.eachAttribNumber(currentOperation.attribs, function (n) {
@ -156,44 +213,44 @@ AttributeManager.prototype = _(AttributeManager.prototype).extend({
this.rep.apool.getAttribValue(n)
]);
}.bind(this));
// skip the loop
return attributes;
}
}
return attributes;
},
/*
Gets all attributes at caret position
Gets all attributes at caret position
if the user selected a range, the start of the selection is taken
returns a list of attributes in the format
returns a list of attributes in the format
[ ["key","value"], ["key","value"], ... ]
*/
getAttributesOnCaret: function(){
return this.getAttributesOnPosition(this.rep.selStart[0], this.rep.selStart[1]);
},
/*
Sets a specified attribute on a line
@param lineNum: the number of the line to set the attribute for
@param attributeKey: the name of the attribute to set, e.g. list
@param attributeValue: an optional parameter to pass to the attribute (e.g. indention level)
*/
setAttributeOnLine: function(lineNum, attributeName, attributeValue){
var loc = [0,0];
var builder = Changeset.builder(this.rep.lines.totalWidth());
var hasMarker = this.lineHasMarker(lineNum);
ChangesetUtils.buildKeepRange(this.rep, builder, loc, (loc = [lineNum, 0]));
if(hasMarker){
ChangesetUtils.buildKeepRange(this.rep, builder, loc, (loc = [lineNum, 1]), [
[attributeName, attributeValue]
], this.rep.apool);
}else{
}else{
// add a line marker
builder.insert('*', [
['author', this.author],
@ -202,10 +259,10 @@ AttributeManager.prototype = _(AttributeManager.prototype).extend({
[attributeName, attributeValue]
], this.rep.apool);
}
return this.applyChangeset(builder);
},
/**
* Removes a specified attribute on a line
* @param lineNum the number of the affected line
@ -243,7 +300,7 @@ AttributeManager.prototype = _(AttributeManager.prototype).extend({
return this.applyChangeset(builder);
},
/*
Toggles a line attribute for the specified line number
If a line attribute with the specified name exists with any value it will be removed
@ -256,7 +313,7 @@ AttributeManager.prototype = _(AttributeManager.prototype).extend({
return this.getAttributeOnLine(lineNum, attributeName) ?
this.removeAttributeOnLine(lineNum, attributeName) :
this.setAttributeOnLine(lineNum, attributeName, attributeValue);
}
});

3
src/static/js/ace2_inner.js
View File

@ -2423,6 +2423,9 @@ function Ace2Inner(){
var opIter = Changeset.opIterator(rep.alines[n]);
var indexIntoLine = 0;
var selectionStartInLine = 0;
if (documentAttributeManager.lineHasMarker(n)) {
selectionStartInLine = 1; // ignore "*" used as line marker
}
var selectionEndInLine = rep.lines.atIndex(n).text.length; // exclude newline
if (n == selStartLine)
{