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Code Issues Releases Wiki Activity

minor code review

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This commit is contained in:
gorhill 2016-08-06 12:09:18 -04:00
parent 6bd356dd2c
commit 372f4b4c86
1 changed files with 101 additions and 95 deletions
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196
src/js/contentscript.js
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@ -122,6 +122,7 @@ var reParserEx = /:(?:matches-css|has|style|xpath)\(.+?\)$/;
var allExceptions = Object.create(null);
var allSelectors = Object.create(null);
var stagedNodes = [];
var matchesProp = vAPI.matchesProp;
// Complex selectors, due to their nature may need to be "de-committed". A
// Set() is used to implement this functionality.
@ -143,13 +144,107 @@ var cosmeticFiltersActivated = function() {
/******************************************************************************/
var runSimpleSelectorJob = function(job, root, fn) {
if ( job._1 === undefined ) {
job._1 = job._0.join(cssNotHiddenId + ',');
}
if ( root[matchesProp](job._1) ) {
fn(root);
}
var nodes = root.querySelectorAll(job._1),
i = nodes.length;
while ( i-- ) {
fn(nodes[i], job);
}
};
var runComplexSelectorJob = function(job, fn) {
if ( job._1 === undefined ) {
job._1 = job._0.join(',');
}
var nodes = document.querySelectorAll(job._1),
i = nodes.length;
while ( i-- ) {
fn(nodes[i], job);
}
};
var runHasJob = function(job, fn) {
var nodes = document.querySelectorAll(job._0),
i = nodes.length, node;
while ( i-- ) {
node = nodes[i];
if ( node.querySelector(job._1) !== null ) {
fn(node, job);
}
}
};
var csspropDictFromString = function(s) {
var aa = s.split(/;\s+|;$/),
i = aa.length,
dict = Object.create(null),
prop, pos;
while ( i-- ) {
prop = aa[i].trim();
if ( prop === '' ) { continue; }
pos = prop.indexOf(':');
if ( pos === -1 ) { continue; }
dict[prop.slice(0, pos).trim()] = prop.slice(pos + 1).trim();
}
return dict;
};
var runMatchesCSSJob = function(job, fn) {
var nodes = document.querySelectorAll(job._0),
i = nodes.length;
if ( i === 0 ) { return; }
if ( typeof job._1 === 'string' ) {
job._1 = csspropDictFromString(job._1);
}
var node, match, style;
while ( i-- ) {
node = nodes[i];
style = window.getComputedStyle(node);
match = undefined;
for ( var prop in job._1 ) {
match = style[prop] === job._1[prop];
if ( match === false ) {
break;
}
}
if ( match === true ) {
fn(node, job);
}
}
};
var runXpathJob = function(job, fn) {
if ( job._1 === undefined ) {
job._1 = document.createExpression(job._0, null);
}
var xpr = job._2 = job._1.evaluate(
document,
XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,
job._2 || null
);
var i = xpr.snapshotLength, node;
while ( i-- ) {
node = xpr.snapshotItem(i);
if ( node.nodeType === 1 ) {
fn(node, job);
}
}
};
/******************************************************************************/
var domFilterer = {
commitMissCount: 0,
disabledId: vAPI.randomToken(),
enabled: true,
hiddenId: vAPI.randomToken(),
hiddenNodeCount: 0,
matchesProp: vAPI.matchesProp,
styleTags: [],
jobQueue: jobQueue,
@ -288,7 +383,7 @@ var domFilterer = {
if ( this.job2._0.length ) {
i = stagedNodes.length;
while ( i-- ) {
this.runSimpleSelectorJob(this.job2, stagedNodes[i], hideNode);
runSimpleSelectorJob(this.job2, stagedNodes[i], hideNode);
}
}
stagedNodes = [];
@ -301,7 +396,7 @@ var domFilterer = {
// The handling of these can be considered optional, since they are
// also applied declaratively using a style tag.
if ( this.job3._0.length ) {
this.runComplexSelectorJob(this.job3, complexHideNode);
runComplexSelectorJob(this.job3, complexHideNode);
}
// Custom jobs. No optional since they can't be applied in a
@ -386,105 +481,16 @@ var domFilterer = {
}
},
runSimpleSelectorJob: function(job, root, fn) {
if ( job._1 === undefined ) {
job._1 = job._0.join(cssNotHiddenId + ',');
}
if ( root[this.matchesProp](job._1) ) {
fn(root);
}
var nodes = root.querySelectorAll(job._1),
i = nodes.length;
while ( i-- ) {
fn(nodes[i], job);
}
},
runComplexSelectorJob: function(job, fn) {
if ( job._1 === undefined ) {
job._1 = job._0.join(',');
}
var nodes = document.querySelectorAll(job._1),
i = nodes.length;
while ( i-- ) {
fn(nodes[i], job);
}
},
runHasJob: function(job, fn) {
var nodes = document.querySelectorAll(job._0),
i = nodes.length, node;
while ( i-- ) {
node = nodes[i];
if ( node.querySelector(job._1) !== null ) {
fn(node, job);
}
}
},
runMatchesCSSJob: function(job, fn) {
var nodes = document.querySelectorAll(job._0),
i = nodes.length;
if ( i === 0 ) { return; }
if ( typeof job._1 === 'string' ) {
var aa = job._1.split(/;(?:\s+|$)/),
j = aa.length,
dict = Object.create(null),
s, pos;
while ( j-- ) {
s = aa[j].trim();
if ( s === '' ) { continue; }
pos = s.indexOf(':');
if ( pos === -1 ) { continue; }
dict[s.slice(0, pos).trim()] = s.slice(pos + 1).trim();
}
job._1 = dict;
}
var node, match, style;
while ( i-- ) {
node = nodes[i];
style = window.getComputedStyle(node);
match = undefined;
for ( var prop in job._1 ) {
match = style[prop] === job._1[prop];
if ( match === false ) {
break;
}
}
if ( match === true ) {
fn(node, job);
}
}
},
runXpathJob: function(job, fn) {
if ( job._1 === undefined ) {
job._1 = document.createExpression(job._0, null);
}
var xpr = job._2 = job._1.evaluate(
document,
XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,
job._2 || null
);
var i = xpr.snapshotLength, node;
while ( i-- ) {
node = xpr.snapshotItem(i);
if ( node.nodeType === 1 ) {
fn(node, job);
}
}
},
runJob: function(job, fn) {
switch ( job.t ) {
case 'has-hide':
this.runHasJob(job, fn);
runHasJob(job, fn);
break;
case 'matches-css-hide':
this.runMatchesCSSJob(job, fn);
runMatchesCSSJob(job, fn);
break;
case 'xpath-hide':
this.runXpathJob(job, fn);
runXpathJob(job, fn);
break;
}
},