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Userscript to add a few helpful links to each listed hosta
// ==UserScript==
// @name hosta list links
// @namespace hostalists
// @include http*://www.hostalists.org/*
// @version 1
// @grant none
// @description Userscript to add a few helpful links to each listed hosta
// ==/UserScript==
(function() {
const HOSTA_LIST_ITEM_SELECTOR = 'h1 ~ table li, h1 ~ ul li';
const MAX_NAME_LENGTH = 30;
const SEARCH_TOKEN = '%s';
const SEARCHES = {
GOOGLE: {
label: 'G',
title: 'Google',
url: 'https://www.google.com/search?q="%s" hosta',
},
GOOGLE_IMAGES: {
label: 'img',
title: 'Google Images',
url: 'https://www.google.com/search?q="%s" hosta&tbm=isch',
},
HOSTA_LIBRARY: {
label: 'HL',
title: 'Hosta Library',
url: 'https://www.google.com/search?q="%s"+site%3Ahostalibrary.org&btnI=1',
},
FRANSEN: {
label: 'Fr',
title: 'Fransen',
url: 'https://www.google.com/search?q="%s"+site%3Ahostaparadise.com&btnI=1',
},
GARDENWEB: {
label: 'GW',
title: 'GardenWeb forums',
url: 'https://www.google.com/search?q="%s" hosta+site%3Aforums.gardenweb.com&btnI=1',
},
};
const LIST_ITEM_CLASS = 'link-decorated-hosta-li';
const COMMON_CLASS_NAME = 'helper-link';
const EXPANDED_CLASS = 'expanded';
const STYLE = `
.${LIST_ITEM_CLASS} {
cursor: pointer;
cursor: alias;
}
.${LIST_ITEM_CLASS} > .${COMMON_CLASS_NAME} {
color: #006B45;
display: none;
}
.${LIST_ITEM_CLASS}:hover > .${COMMON_CLASS_NAME},
.${LIST_ITEM_CLASS}.${EXPANDED_CLASS} > .${COMMON_CLASS_NAME} {
display: inline;
}
`;
//////////////
activate();
//////////////
function activate() {
var listItems = document.querySelectorAll(HOSTA_LIST_ITEM_SELECTOR);
addLinks(listItems);
addClickHandler();
addStyle();
}
function addLinks(hostaListItems) {
for (var i = 0, listItem; listItem = hostaListItems[i]; i++) {
var hosta = listItem.innerHTML.replace(/^\s*('|")|('|")\s*$/g, '');
var links = makeLinks(hosta);
for (var j = 0, link; link = links[j]; j++) {
listItem.innerHTML += ' ';
listItem.appendChild(link);
}
listItem.className += ` ${LIST_ITEM_CLASS}`;
}
function makeLinks(hostaName) {
var links = [];
if (!isHostaName(hostaName)) return links;
for (var searchKey in SEARCHES) {
if (!SEARCHES.hasOwnProperty(searchKey)) continue;
var search = SEARCHES[searchKey];
var url = search.url.replace(SEARCH_TOKEN, encodeURIComponent(hostaName));
var link = makeLink( search.label, search.title, url );
links.push(link);
}
return links;
}
function makeLink(label, title, url) {
var a = document.createElement('a');
var siteClass = title.replace(/ /g, '-').toLowerCase();
a.className = `${COMMON_CLASS_NAME} ${siteClass}`;
a.href = url;
a.title = title;
a.target = '_blank';
a.innerHTML = label;
return a;
}
function isHostaName(term) {
if (term.length > MAX_NAME_LENGTH) return false; // too long
if (term.indexOf('<') != -1) return false; // contains HTML
if (term.indexOf('.') != -1) return false; // contains a sentence
return true;
}
}
function addClickHandler() {
document.body.addEventListener('click', function(event) {
if (event.target.className.indexOf(LIST_ITEM_CLASS) == -1) return;
if (event.target.className.indexOf(EXPANDED_CLASS) != -1) {
event.target.className = event.target.className.replace(EXPANDED_CLASS, '');
} else {
event.target.className += ` ${EXPANDED_CLASS}`;
event.target.className = event.target.className.replace(' ', ' ');
}
});
}
function addStyle() {
var styleBlock = document.createElement('style');
styleBlock.innerHTML = STYLE;
document.head.appendChild(styleBlock);
}
})();