mirror of
https://github.com/gorhill/uBlock.git
synced 2024-11-07 03:12:33 +01:00
Fix some element picker-related issues
Related discussion: - https://www.reddit.com/r/uBlockOrigin/comments/c5do7w/ Make the element picker better reflect network filters as parsed by the static network filtering engine. Additionally, discard single alphanumeric character-based filters. Related discussion: - https://www.reddit.com/r/uBlockOrigin/comments/c62irc/ Inject newly created cosmetic filters into the DOM filterer, in order for these filters to be enforced by the DOM filterer in subsequent dynamic DOM changes.
This commit is contained in:
Raymond Hill
parent
dba075af59
commit
cf4345ffc4
@ -114,7 +114,7 @@
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/******************************************************************************/
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/******************************************************************************/
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(function() {
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(( ) => {
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/******************************************************************************/
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@ -127,9 +127,7 @@ if (
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}
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var pickerRoot = document.getElementById(vAPI.sessionId);
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if ( pickerRoot ) {
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return;
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}
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if ( pickerRoot ) { return; }
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var pickerBody = null;
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var svgOcean = null;
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@ -154,8 +152,7 @@ var lastNetFilterUnion = '';
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// For browsers not supporting `:scope`, it's not the end of the world: the
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// suggested CSS selectors may just end up being more verbose.
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var cssScope = ':scope > ';
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let cssScope = ':scope > ';
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try {
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document.querySelector(':scope *');
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} catch (e) {
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@ -164,7 +161,7 @@ try {
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/******************************************************************************/
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var safeQuerySelectorAll = function(node, selector) {
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const safeQuerySelectorAll = function(node, selector) {
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if ( node !== null ) {
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try {
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return node.querySelectorAll(selector);
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@ -176,18 +173,18 @@ var safeQuerySelectorAll = function(node, selector) {
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/******************************************************************************/
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var rawFilterFromTextarea = function() {
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var s = taCandidate.value,
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pos = s.indexOf('\n');
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const rawFilterFromTextarea = function() {
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const s = taCandidate.value;
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const pos = s.indexOf('\n');
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return pos === -1 ? s.trim() : s.slice(0, pos).trim();
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};
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/******************************************************************************/
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var getElementBoundingClientRect = function(elem) {
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var rect = typeof elem.getBoundingClientRect === 'function' ?
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elem.getBoundingClientRect() :
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{ height: 0, left: 0, top: 0, width: 0 };
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const getElementBoundingClientRect = function(elem) {
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let rect = typeof elem.getBoundingClientRect === 'function'
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? elem.getBoundingClientRect()
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: { height: 0, left: 0, top: 0, width: 0 };
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// https://github.com/gorhill/uBlock/issues/1024
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// Try not returning an empty bounding rect.
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@ -195,16 +192,13 @@ var getElementBoundingClientRect = function(elem) {
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return rect;
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}
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var left = rect.left,
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let left = rect.left,
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right = rect.right,
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top = rect.top,
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bottom = rect.bottom;
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var children = elem.children,
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i = children.length;
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while ( i-- ) {
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rect = getElementBoundingClientRect(children[i]);
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for ( const child of elem.children ) {
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rect = getElementBoundingClientRect(child);
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if ( rect.width === 0 || rect.height === 0 ) {
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continue;
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}
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@ -224,7 +218,7 @@ var getElementBoundingClientRect = function(elem) {
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/******************************************************************************/
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var highlightElements = function(elems, force) {
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const highlightElements = function(elems, force) {
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// To make mouse move handler more efficient
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if ( !force && elems.length === targetElements.length ) {
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if ( elems.length === 0 || elems[0] === targetElements[0] ) {
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@ -233,24 +227,23 @@ var highlightElements = function(elems, force) {
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}
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targetElements = elems;
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var ow = pickerRoot.contentWindow.innerWidth;
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var oh = pickerRoot.contentWindow.innerHeight;
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var ocean = [
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const ow = pickerRoot.contentWindow.innerWidth;
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const oh = pickerRoot.contentWindow.innerHeight;
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const ocean = [
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'M0 0',
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'h', ow,
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'v', oh,
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'h-', ow,
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'z'
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];
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var islands = [];
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const islands = [];
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var elem, rect, poly;
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for ( var i = 0; i < elems.length; i++ ) {
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elem = elems[i];
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for ( let i = 0; i < elems.length; i++ ) {
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const elem = elems[i];
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if ( elem === pickerRoot ) {
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continue;
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}
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rect = getElementBoundingClientRect(elem);
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const rect = getElementBoundingClientRect(elem);
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// Ignore if it's not on the screen
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if ( rect.left > ow || rect.top > oh ||
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@ -258,7 +251,7 @@ var highlightElements = function(elems, force) {
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continue;
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}
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poly = 'M' + rect.left + ' ' + rect.top +
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const poly = 'M' + rect.left + ' ' + rect.top +
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'h' + rect.width +
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'v' + rect.height +
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'h-' + rect.width +
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@ -489,7 +482,7 @@ const filterTypes = {
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// Also take into account the `src` attribute for `img` elements -- and limit
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// the value to the 1024 first characters.
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var cosmeticFilterFromElement = function(elem) {
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const cosmeticFilterFromElement = function(elem) {
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if ( elem === null ) { return 0; }
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if ( elem.nodeType !== 1 ) { return 0; }
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@ -616,7 +609,7 @@ var cosmeticFilterFromElement = function(elem) {
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/******************************************************************************/
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var filtersFrom = function(x, y) {
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const filtersFrom = function(x, y) {
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bestCandidateFilter = null;
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netFilterCandidates.length = 0;
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cosmeticFilterCandidates.length = 0;
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@ -701,34 +694,51 @@ var filtersFrom = function(x, y) {
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TODO: need to be revised once I implement chained cosmetic operators.
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*/
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const filterToDOMInterface = (function() {
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const filterToDOMInterface = (( ) => {
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const reHnAnchorPrefix = '^[\\w-]+://(?:[^/?#]+\\.)?';
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const reCaret = '(?:[^%.0-9a-z_-]|$)';
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// Net filters: we need to lookup manually -- translating into a foolproof
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// CSS selector is just not possible.
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//
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// https://github.com/chrisaljoudi/uBlock/issues/945
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// Transform into a regular expression, this allows the user to
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// edit and insert wildcard(s) into the proposed filter.
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// https://www.reddit.com/r/uBlockOrigin/comments/c5do7w/
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// Better handling of pure hostname filters. Also, discard single
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// alphanumeric character filters.
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const fromNetworkFilter = function(filter) {
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const out = [];
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// https://github.com/chrisaljoudi/uBlock/issues/945
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// Transform into a regular expression, this allows the user to edit and
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// insert wildcard(s) into the proposed filter.
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if ( /^[0-9a-z]$/i.test(filter) ) { return out; }
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let reStr = '';
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if ( filter.length > 1 && filter.charAt(0) === '/' && filter.slice(-1) === '/' ) {
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if (
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filter.length > 2 &&
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filter.startsWith('/') &&
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filter.endsWith('/')
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) {
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reStr = filter.slice(1, -1);
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}
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else {
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} else if ( /^\w[\w.-]*[a-z]$/i.test(filter) ) {
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reStr = reHnAnchorPrefix +
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filter.toLowerCase().replace(/\./g, '\\.') +
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reCaret;
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} else {
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let rePrefix = '', reSuffix = '';
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if ( filter.slice(0, 2) === '||' ) {
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filter = filter.replace('||', '');
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} else {
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if ( filter.charAt(0) === '|' ) {
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rePrefix = '^';
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filter = filter.slice(1);
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}
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if ( filter.startsWith('||') ) {
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rePrefix = reHnAnchorPrefix;
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filter = filter.slice(2);
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} else if ( filter.startsWith('|') ) {
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rePrefix = '^';
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filter = filter.slice(1);
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}
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if ( filter.slice(-1) === '|' ) {
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if ( filter.endsWith('|') ) {
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reSuffix = '$';
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filter = filter.slice(0, -1);
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}
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reStr = rePrefix +
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filter.replace(/[.+?${}()|[\]\\]/g, '\\$&').replace(/[\*^]+/g, '.*') +
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filter.replace(/[.+?${}()|[\]\\]/g, '\\$&')
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.replace(/\*+/g, '.*')
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.replace(/\^/g, reCaret) +
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reSuffix;
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}
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let reFilter = null;
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@ -740,7 +750,7 @@ const filterToDOMInterface = (function() {
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}
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// Lookup by tag names.
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let elems = document.querySelectorAll(
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const elems = document.querySelectorAll(
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Object.keys(netFilter1stSources).join()
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);
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for ( const elem of elems ) {
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@ -781,19 +791,15 @@ const filterToDOMInterface = (function() {
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};
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// Cosmetic filters: these are straight CSS selectors.
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// TODO: This is still not working well for a[href], because there are many
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// ways to compose a valid href to the same effective URL. One idea is to
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// normalize all a[href] on the page, but for now I will wait and see, as I
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// prefer to refrain from tampering with the page content if I can avoid it.
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//
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// https://github.com/uBlockOrigin/uBlock-issues/issues/389
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// Test filter using comma-separated list to better detect invalid CSS
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// selectors.
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const fromPlainCosmeticFilter = function(filter) {
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const fromPlainCosmeticFilter = function(raw) {
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let elems;
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try {
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document.documentElement.matches(`${filter},\na`);
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elems = document.querySelectorAll(filter);
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document.documentElement.matches(`${raw},\na`);
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elems = document.querySelectorAll(raw);
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}
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catch (e) {
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return;
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@ -801,13 +807,13 @@ const filterToDOMInterface = (function() {
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const out = [];
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for ( const elem of elems ) {
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if ( elem === pickerRoot ) { continue; }
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out.push({ type: 'cosmetic', elem });
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out.push({ type: 'cosmetic', elem, raw });
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}
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return out;
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};
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// https://github.com/gorhill/uBlock/issues/1772
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// Handle procedural cosmetic filters.
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// Handle procedural cosmetic filters.
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const fromCompiledCosmeticFilter = function(raw) {
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if ( typeof raw !== 'string' ) { return; }
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let o;
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@ -826,7 +832,7 @@ const filterToDOMInterface = (function() {
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if ( !elems ) { return; }
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const out = [];
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for ( const elem of elems ) {
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out.push({ type: 'cosmetic', elem });
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out.push({ type: 'cosmetic', elem, raw });
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}
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return out;
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};
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@ -853,7 +859,7 @@ const filterToDOMInterface = (function() {
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}
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lastFilter = filter;
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lastAction = undefined;
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if ( filter.lastIndexOf('##', 0) === -1 ) {
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if ( filter.startsWith('##') === false ) {
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lastResultset = fromNetworkFilter(filter);
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if ( previewing ) { apply(); }
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callback(lastResultset);
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@ -870,7 +876,7 @@ const filterToDOMInterface = (function() {
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vAPI.messaging.send(
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'elementPicker',
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{ what: 'compileCosmeticFilterSelector', selector: selector },
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function(response) {
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response => {
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lastResultset = fromCompiledCosmeticFilter(response);
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if ( previewing ) { apply(); }
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callback(lastResultset);
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@ -878,11 +884,12 @@ const filterToDOMInterface = (function() {
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);
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};
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// https://github.com/gorhill/uBlock/issues/1629
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// Avoid hiding the element picker's related elements.
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const applyHide = function() {
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const htmlElem = document.documentElement;
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for ( const item of lastResultset ) {
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const elem = item.elem;
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// https://github.com/gorhill/uBlock/issues/1629
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if ( elem === pickerRoot ) { continue; }
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if (
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(elem !== htmlElem) &&
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@ -959,17 +966,38 @@ const filterToDOMInterface = (function() {
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applied = false;
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};
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const preview = function(filter) {
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previewing = filter !== false;
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if ( previewing ) {
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queryAll(filter, items => {
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if ( items === undefined ) { return; }
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apply();
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});
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} else {
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unapply();
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}
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// https://www.reddit.com/r/uBlockOrigin/comments/c62irc/
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// Support injecting the cosmetic filters into the DOM filterer
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// immediately rather than wait for the next page load.
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const preview = function(rawFilter, permanent = false) {
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previewing = rawFilter !== false;
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pickerBody.classList.toggle('preview', previewing);
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if ( previewing === false ) {
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return unapply();
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}
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queryAll(rawFilter, items => {
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if ( items === undefined ) { return; }
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apply();
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if ( permanent === false ) { return; }
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if ( vAPI.domFilterer instanceof Object === false ) { return; }
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const cssSelectors = new Set();
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const proceduralSelectors = new Set();
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for ( const item of items ) {
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if ( item.type !== 'cosmetic' ) { continue; }
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if ( item.raw.startsWith('{') ) {
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proceduralSelectors.add(item.raw);
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} else {
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cssSelectors.add(item.raw);
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}
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}
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vAPI.domFilterer.addCSSRule(
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Array.from(cssSelectors),
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'display:none!important;'
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);
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vAPI.domFilterer.addProceduralSelectors(
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Array.from(proceduralSelectors)
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);
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});
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};
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return {
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@ -983,7 +1011,7 @@ const filterToDOMInterface = (function() {
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const userFilterFromCandidate = function(callback) {
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let v = rawFilterFromTextarea();
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filterToDOMInterface.set(v, function(items) {
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filterToDOMInterface.set(v, items => {
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if ( !items || items.length === 0 ) {
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callback();
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return;
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@ -997,7 +1025,7 @@ const userFilterFromCandidate = function(callback) {
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}
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// Cosmetic filter?
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if ( v.lastIndexOf('##', 0) === 0 ) {
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if ( v.startsWith('##') ) {
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callback(hostname + v);
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return;
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}
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@ -1006,8 +1034,8 @@ const userFilterFromCandidate = function(callback) {
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const opts = [];
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// If no domain included in filter, we need domain option
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if ( v.lastIndexOf('||', 0) === -1 ) {
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opts.push('domain=' + hostname);
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if ( v.startsWith('||') === false ) {
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opts.push(`domain=${hostname}`);
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}
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const item = items[0];
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@ -1113,9 +1141,9 @@ const candidateFromFilterChoice = function(filterChoice) {
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/******************************************************************************/
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const filterChoiceFromEvent = function(ev) {
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var li = ev.target;
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var isNetFilter = li.textContent.slice(0, 2) !== '##';
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var r = {
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let li = ev.target;
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const isNetFilter = li.textContent.startsWith('##') === false;
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const r = {
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filters: isNetFilter ? netFilterCandidates : cosmeticFilterCandidates,
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slot: 0,
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modifier: ev.ctrlKey || ev.metaKey
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@ -1146,7 +1174,7 @@ const onDialogClicked = function(ev) {
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// We have to exit from preview mode: this guarantees matching elements
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// will be found for the candidate filter.
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filterToDOMInterface.preview(false);
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userFilterFromCandidate(function(filter) {
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userFilterFromCandidate(filter => {
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if ( !filter ) { return; }
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vAPI.messaging.send(
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'elementPicker',
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@ -1158,7 +1186,7 @@ const onDialogClicked = function(ev) {
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pageDomain: window.location.hostname
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}
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);
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filterToDOMInterface.preview(rawFilterFromTextarea());
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filterToDOMInterface.preview(rawFilterFromTextarea(), true);
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stopPicker();
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});
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}
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@ -1291,10 +1319,10 @@ const zap = function() {
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/******************************************************************************/
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var elementFromPoint = (function() {
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var lastX, lastY;
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const elementFromPoint = (( ) => {
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let lastX, lastY;
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return function(x, y) {
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return (x, y) => {
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if ( x !== undefined ) {
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lastX = x; lastY = y;
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} else if ( lastX !== undefined ) {
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@ -1304,7 +1332,7 @@ var elementFromPoint = (function() {
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}
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if ( !pickerRoot ) { return null; }
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pickerRoot.style.setProperty('pointer-events', 'none', 'important');
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var elem = document.elementFromPoint(x, y);
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let elem = document.elementFromPoint(x, y);
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if ( elem === document.body || elem === document.documentElement ) {
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elem = null;
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}
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@ -1347,7 +1375,7 @@ const onSvgHovered = (function() {
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*/
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var onSvgTouchStartStop = (function() {
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const onSvgTouchStartStop = (function() {
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var startX,
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startY;
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return function onTouch(ev) {
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@ -1407,7 +1435,7 @@ var onSvgTouchStartStop = (function() {
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/******************************************************************************/
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var onSvgClicked = function(ev) {
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const onSvgClicked = function(ev) {
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if ( ev.isTrusted === false ) { return; }
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||||
// If zap mode, highlight element under mouse, this makes the zapper usable
|
||||
@ -1448,14 +1476,14 @@ var onSvgClicked = function(ev) {
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
var svgListening = function(on) {
|
||||
const svgListening = function(on) {
|
||||
var action = (on ? 'add' : 'remove') + 'EventListener';
|
||||
svgRoot[action]('mousemove', onSvgHovered, { passive: true });
|
||||
};
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
var onKeyPressed = function(ev) {
|
||||
const onKeyPressed = function(ev) {
|
||||
// Delete
|
||||
if ( ev.key === 'Delete' && pickerBody.classList.contains('zap') ) {
|
||||
ev.stopPropagation();
|
||||
@ -1479,20 +1507,20 @@ var onKeyPressed = function(ev) {
|
||||
// May need to dynamically adjust the height of the overlay + new position
|
||||
// of highlighted elements.
|
||||
|
||||
var onScrolled = function() {
|
||||
const onScrolled = function() {
|
||||
highlightElements(targetElements, true);
|
||||
};
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
var pausePicker = function() {
|
||||
const pausePicker = function() {
|
||||
pickerBody.classList.add('paused');
|
||||
svgListening(false);
|
||||
};
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
var unpausePicker = function() {
|
||||
const unpausePicker = function() {
|
||||
filterToDOMInterface.preview(false);
|
||||
pickerBody.classList.remove('paused');
|
||||
svgListening(true);
|
||||
@ -1503,7 +1531,7 @@ var unpausePicker = function() {
|
||||
// Let's have the element picker code flushed from memory when no longer
|
||||
// in use: to ensure this, release all local references.
|
||||
|
||||
var stopPicker = function() {
|
||||
const stopPicker = function() {
|
||||
vAPI.shutdown.remove(stopPicker);
|
||||
|
||||
targetElements = [];
|
||||
|
||||
@ -2077,6 +2077,13 @@ FilterParser.prototype.parse = function(raw) {
|
||||
|
||||
let s = this.raw = raw;
|
||||
|
||||
// Filters which are a single alphanumeric character are discarded
|
||||
// as unsupported.
|
||||
if ( s.length === 1 && /[0-9a-z]/i.test(s) ) {
|
||||
this.unsupported = true;
|
||||
return this;
|
||||
}
|
||||
|
||||
// plain hostname? (from HOSTS file)
|
||||
if ( this.reHostnameRule1.test(s) ) {
|
||||
this.f = s.toLowerCase();
|
||||
|
||||
Loading…
Reference in New Issue
Block a user