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|
This script highlights User-defined case-insensitive Text on a page.
It can run on any page but that adds unnecessary load to your computer.
I have set it not to run on any page for now
Go to Add-ons - User Scripts ('Ctrl+ Shift + a' on Firefox)
Click on the Script's Option
Under User Settings Tab, Add Included/Excluded Pages that you want the script to run on
Click OK
Setting Keywords & Highlight Style:
Click on GreaseMonkey Icon
User Scripts Commands...
Set Keywords
Input keywords separated by comma
Example: word 1,word 2,word 3
Set Highlight Style
Input the Highlight Style (use proper CSS)
Example: color: #f00; font-weight: bold; background-color: #ffe4b5;
Note: If you find that another script clashes with this script, set Text Highlighter to Execute first.
Go to Add-ons - User Scripts ('Ctrl+ Shift + a' on Firefox)
Right Click on the Script
On the context menu click: Execute first
On Add-ons - User Scripts, you can also Click on the Execution Order (top Right) and
change the execution order so that Text Highlighter runs before those scripts that clashes with it.
--------- History ---------
1.7 Changed script from matching whole words to do partial word match
similar to browser's FIND + escaped RegEx Quantifiers in keywords
1.6 Code Improvement, using test()
1.5 Code Improvement
1.4 Code Improvement + Added support for non-English Words
1.3 Code Improvement, 10x speed increase
1.2 Added User Script Commands, script can now be auto-updated without losing User Data
1.1 Total Code rewrite, Xpath pattern
1.0 Initial release
*/
(function() {
'use strict';
if (window.self !== window.top) {
return;
}
function setUserPref(varName, defaultVal, menuText, promtText, sep) {
GM_registerMenuCommand(menuText, function() {
var val = prompt(promtText, GM_getValue(varName, defaultVal));
if (val === null) {
return;
}
if (sep && val) {
var pat1 = new RegExp('\\s*' + sep + '+\\s*', 'g');
var pat2 = new RegExp('(?:^' + sep + '+|' + sep + '+$)', 'g');
val = val.replace(pat1, sep).replace(pat2, '');
}
val = val.replace(/\s{2,}/g, ' ').trim();
GM_setValue(varName, val);
location.reload();
});
}
setUserPref(
'keywords',
'word 1,word 2,word 3',
'Set Keywords',
'Set keywords separated by comma\t\t\t\t\t\t\t\r\n\r\nExample:\r\nword 1,word 2,word 3',
','
);
setUserPref(
'highlightStyle',
'color: #f00; background-color: #ffebcd;',
'Set Highlight Style',
'Set the Highlight Style (use proper CSS)\r\n\r\nExample:\r\ncolor: #f00; font-weight: bold; background-color: #ffe4b5;'
);
var highlightStyle = GM_getValue('highlightStyle');
var keywords = GM_getValue('keywords');
if (!keywords || !highlightStyle) {
return;
}
var rQuantifiers = /[-\/\\^$*+?.()|[\]{}]/g;
var keywords = keywords.replace(rQuantifiers, '\\$&').split(',').join('|');
var pat = new RegExp('(' + keywords + ')', 'gi');
var span = document.createElement('span');
var snapElements = document.evaluate(
'.//text()[normalize-space() != "" ' +
'and not(ancestor::style) ' +
'and not(ancestor::script) ' +
'and not(ancestor::textarea) ' +
'and not(ancestor::code) ' +
'and not(ancestor::pre)]',
document.body, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
if (!snapElements.snapshotItem(0)) {
return;
}
for (var i = 0, len = snapElements.snapshotLength; i < len; i++) {
var node = snapElements.snapshotItem(i);
if (pat.test(node.nodeValue)) {
var sp = span.cloneNode(true);
sp.innerHTML = node.nodeValue.replace(pat, '<span style="' + highlightStyle + '">$1</span>');
node.parentNode.replaceChild(sp, node);
}
}
})
|