By Drew
Has 5 other scripts.
// ==UserScript==
// @name Grease Reader
// @namespace
// @description Enhance Google Reader to include auto view next, auto view previous, auto scan next, auto scan previous, auto unstar, and open in new tab, among others.
// @include http://www.google.com/reader/*
// @include https://www.google.com/reader/*
// ==/UserScript==
/* from prototype, the bind function */
var $A = Array.from = function(iterable) {
if (!iterable) return [];
if (iterable.toArray) {
return iterable.toArray();
}
else {
var results = [];
for (var i = 0; i < iterable.length; i++) {
results.push(iterable[i]);
}
return results;
}
}
Function.prototype.bind = function() {
var __method = this, args = $A(arguments), object = args.shift();
return function() {
return __method.apply(object, args.concat($A(arguments)));
}
}
function hasNode(xpath, contextDocument) {
if(contextDocument) {
return contextDocument.evaluate('count(' + xpath + ')', contextDocument, null, XPathResult.NUMBER_TYPE, null).numberValue != 0;
}
else {
return document.evaluate('count(' + xpath + ')', document, null, XPathResult.NUMBER_TYPE, null).numberValue != 0;
}
}
function nodeFor(xpath, contextDocument) {
if(contextDocument) {
return contextDocument.evaluate(xpath, contextDocument, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
}
else {
return document.evaluate(xpath, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
}
}
function nodeIteratorFor(xpath, contextDocument) {
if(contextDocument) {
return contextDocument.evaluate(xpath, contextDocument, null, XPathResult.ORDERED_NODE_ITERATOR_TYPE, null);
}
else {
return document.evaluate(xpath, document, null, XPathResult.ORDERED_NODE_ITERATOR_TYPE, null);
}
}
function nodeSnapshotFor(xpath, contextDocument) {
if(contextDocument) {
return contextDocument.evaluate(xpath, contextDocument, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
}
else {
return document.evaluate(xpath, document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
}
}
function xpathPosition(node, tagName) {
if(node.previousSibling) {
if(node.tagName == tagName) {
return xpathPosition(node.previousSibling, tagName) + 1;
}
else {
return xpathPosition(node.previousSibling, tagName) + 0;
}
}
else {
if(node.tagName == tagName) {
return 1;
}
else {
return 0;
}
}
}
function xpath(node) {
if(node.parentNode) {
return xpath(node.parentNode) + '/' + node.tagName + '[' + xpathPosition(node, node.tagName) + ']';
}
else {
return '';
}
}
/* The Google Reader popup window. */
function GoogleReaderPopup() {
this.divBack = document.createElement('div');
this.divFore = document.createElement('div');
this.divBack.innerHTML =
'<div class = "banner banner-background label-keyboard-selector hidden">' +
'<div class="primary-message-parent">' +
'<ins class="primary-message">Primary Message</ins>' +
'</div>' +
'<div class="secondary-message-parent">' +
'<ins class="secondary-message">Secondary Message</ins>' +
'</div>' +
'</div>';
this.divFore.innerHTML =
'<div class="banner banner-foreground label-keyboard-selector hidden">' +
'<div class="primary-message-parent">' +
'<ins class="primary-message">Primary Message</ins>' +
'</div>' +
'<div class="secondary-message-parent">' +
'<ins class="secondary-message">Secondary Message</ins>' +
'</div>' +
'</div>';
this.divBack = this.divBack.firstChild;
this.divFore = this.divFore.firstChild;
document.body.appendChild(this.divBack);
document.body.appendChild(this.divFore);
}
/* Set the primary message for the Google Reader popup window. */
GoogleReaderPopup.prototype.setPrimaryMessage = function(message) {
var divBackContext = this.divBack.firstChild.firstChild;
var divForeContext = this.divFore.firstChild.firstChild;
divBackContext.replaceChild(document.createTextNode(message), divBackContext.firstChild);
divForeContext.replaceChild(document.createTextNode(message), divForeContext.firstChild);
}
/* Set the secondary message for the Google Reader popup window. */
GoogleReaderPopup.prototype.setSecondaryMessage = function(message) {
var divForeContext = this.divFore.firstChild.nextSibling.firstChild;
var divBackContext = this.divBack.firstChild.nextSibling.firstChild;
divBackContext.innerHTML = message;
divForeContext.innerHTML = message;
}
/* Show the Google Reader popup window with the given message; hide it after one second. */
GoogleReaderPopup.prototype.show = function(message, delay) {
clearTimeout(this.timeout);
backClassNameArray = this.divBack.className.split(' ');
foreClassNameArray = this.divFore.className.split(' ');
for(var index = 0; index < backClassNameArray.length; index++)
if(backClassNameArray[index] == 'hidden')
backClassNameArray[index] = '';
for(var index = 0; index < foreClassNameArray.length; index++)
if(foreClassNameArray[index] == 'hidden')
foreClassNameArray[index] = '';
this.divBack.className = backClassNameArray.join(' ');
this.divFore.className = foreClassNameArray.join(' ');
this.setSecondaryMessage(message);
if(delay) {
this.timeout = setTimeout(this.hide.bind(this), delay);
}
else {
this.timeout = setTimeout(this.hide.bind(this), 1000);
}
}
/* Hide the Google Reader popup window. */
GoogleReaderPopup.prototype.hide = function() {
this.divBack.className = this.divBack.className + ' hidden';
this.divFore.className = this.divFore.className + ' hidden';
}
/* The Google Reader web application. */
function GoogleReader() {
this.popup = new GoogleReaderPopup();
}
/* Dispatch a keypress event. */
GoogleReader.prototype.dispatch = function(character, shift) {
var event = document.createEvent('KeyboardEvent');
event.initKeyEvent('keypress', true, true, null, false, false, shift, false, 0, character.charCodeAt(0));
document.dispatchEvent(event);
}
/* View the next item in the reading list. */
GoogleReader.prototype.viewNext = function() {
this.dispatch('j');
}
/* View the previous item in the reading list. */
GoogleReader.prototype.viewPrevious = function() {
this.dispatch('k');
}
/* Scan the next item in the reading list. */
GoogleReader.prototype.scanNext = function() {
this.dispatch('n');
}
/* Scan the previous item in the reading list. */
GoogleReader.prototype.scanPrevious = function() {
this.dispatch('p');
}
/* Star the current item in the reading list. */
GoogleReader.prototype.star = function() {
this.dispatch('s');
}
/* Load starred items in the reading list. */
GoogleReader.prototype.loadStar = function() {
this.dispatch('g');
this.dispatch('s');
}
/* Page down. */
GoogleReader.prototype.pageDown = function() {
this.dispatch('n', true);
}
/* Status */
GoogleReader.prototype.statusLoading = 0;
GoogleReader.prototype.statusLoaded = 1;
GoogleReader.prototype.statusEmpty = 2;
GoogleReader.prototype.statusNext = function() {
var nodeNext = nodeFor('//html/body/div[11]/div/div[2]/div/div/div[2]/div[2]/ul/li[5]');
if(nodeNext.className.indexOf('hidden') != -1) {
return this.statusEmpty;
}
else
if(nodeNext.className.indexOf('loading') != -1) {
return this.statusLoading;
}
else {
return this.statusLoaded;
}
}
GoogleReader.prototype.statusPrevious = function() {
var nodePrevious = nodeFor('//html/body/div[11]/div/div[2]/div/div/div[2]/div[2]/ul/li[3]');
if(nodePrevious.className.indexOf('hidden') != -1) {
return this.statusEmpty;
}
else
if(nodePrevious.className.indexOf('loading') != -1) {
return this.statusLoading;
}
else {
return this.statusLoaded;
}
}
/* The Grease Reader. */
function GreaseReader() {
GoogleReader.call(this);
this.interval = GM_getValue('interval', 1000);
this.viewPreviousAutoState = false;
this.viewNextAutoState = false;
this.popup.setPrimaryMessage('Grease Reader');
}
/* Set the Grease Reader prototype to Google Reader */
GreaseReader.prototype = new GoogleReader();
GreaseReader.prototype.statusHalt = 0;
GreaseReader.prototype.statusScanNextAuto = 1;
GreaseReader.prototype.statusScanPreviousAuto = 2;
GreaseReader.prototype.statusViewNextAuto = 3;
GreaseReader.prototype.statusViewPreviousAuto = 4;
GreaseReader.prototype.statusUnstarAuto = 5;
GreaseReader.prototype.statusHelp = 6;
GreaseReader.prototype.statusEndAuto = 7;
GreaseReader.prototype.status = GreaseReader.prototype.statusHalt;
GreaseReader.prototype.xpathNodeItemBodyContainer = '//div[@class = "item-body-container"]/div';
/* Listen for the '?', 'J', 'K', 'V', 'b', 'o', '+', '-', and 'e' keys.
* On '?', show help.
* On 'J', toggle auto view next.
* On 'K', toggle auto view previous.
* On 'V', show original item in new tab.
* On 'b', toggle auto scan next.
* On 'o', toggle auto scan previous.
* On 'S', toggle auto unstar.
* On '+', scroll faster.
* On '-', scroll slower.
* On 'e', go to the end of the list.
* On any other, reset the timeout
*/
GreaseReader.prototype.listen = function(event) {
if(event.type == 'keypress') {
if(event.target.tagName == 'INPUT') {
// ignore event type keypress if event target tagname is "INPUT"
}
else
if(event.charCode == '?'.charCodeAt(0)) {
this.showHelp();
}
else
if(event.charCode == 'V'.charCodeAt(0)) {
this.showOriginalTab();
}
else
if(event.charCode == 'b'.charCodeAt(0)) {
this.scanNextAuto();
}
else
if(event.charCode == 'o'.charCodeAt(0)) {
this.scanPreviousAuto();
}
else
if(event.charCode == 'J'.charCodeAt(0)) {
this.viewNextAuto();
}
else
if(event.charCode == 'K'.charCodeAt(0)) {
this.viewPreviousAuto();
}
else
if(event.charCode == '+'.charCodeAt(0)) {
this.faster();
}
else
if(event.charCode == '-'.charCodeAt(0)) {
this.slower();
}
else
if(event.charCode == 'S'.charCodeAt(0)) {
this.unstarAuto();
}
else
if(event.charCode == 'e'.charCodeAt(0)) {
this.endAuto();
}
else
if(event.view != null) {
this.resetTimeout();
}
}
else
if(event.type == 'DOMNodeInserted') {
if(event.target == nodeFor(this.xpathNodeItemBodyContainer)) {
this.onNodeInsertedItemBodyContainer(event);
}
}
}
/* If the item body contains an image, float the image right and, if
necessary, resize the image to be 250 pixels in width. */
GreaseReader.prototype.onNodeInsertedItemBodyContainer = function(event) {
var image = event.target.getElementsByTagName('img');
for(var index = 0; index < image.length; index++) {
image[index].style.cssFloat = 'right';
image[index].style.clear = 'both';
if(image[index].offsetWidth > 250) {
image[index].style.width = '250px';
image[index].style.height = 'auto';
}
}
}
/* Show help. */
GreaseReader.prototype.showHelp = function() {
if(this.status == this.statusHelp) {
this.status = this.statusHalt;
}
else {
this.status = this.statusHelp;
this.showHelpHelper();
}
}
GreaseReader.prototype.showHelpHelper = function() {
if(this.status == this.statusHelp) {
help = '<table style = "margin-left: auto; margin-right: auto; text-align: left; font-size: 9pt">' +
'<tr>' +
'<td colspan = "3" style = "text-align: center; font-size: 16pt">Google Reader Help</td>' +
'<td rowspan = "12" style = "width: 20px"></td>' +
'<td colspan = "3" style = "text-align: center; font-size: 16pt">Grease Reader Help</td>' +
'</tr>' +
'<tr>' +
'<td></td><td rowspan = "11" style = "width: 10px"></td><td></td>' +
'<td></td><td rowspan = "11" style = "width: 10px"></td><td></td>' +
'</tr>' +
'<tr>' +
'<td> j</td><td>View the next item.</td>' +
'<td>shift j</td><td>Toggle auto view next.</td>' +
'</tr>' +
'<tr>' +
'<td> k</td><td>View the previous item.</td>' +
'<td>shift k</td><td>Toggle auto view previous.</td>' +
'</tr>' +
'<tr>' +
'<td> n</td><td>Scan to the next item.</td>' +
'<td> b</td><td>Toggle auto scan next.</td>' +
'</tr>' +
'<tr>' +
'<td> p</td><td>Scan to the previous item.</td>' +
'<td> o</td><td>Toggle auto scan previous.</td>' +
'</tr>' +
'<tr>' +
'<td> v</td><td>Open the original item in a new window.</td>' +
'<td>shift v</td><td>Open the original item in a new tab.</td>' +
'</tr>' +
'<tr>' +
'<td> s</td><td>Star the current item.</td>' +
'<td>shift s</td><td>Toggle auto unstar.</td>' +
'</tr>' +
'<tr>' +
'<td> h</td><td>Go to the first item.</td>' +
'<td> e</td><td>Go to the last item.</td>' +
'</tr>' +
'<tr>' +
'<td></td><td></td>' +
'<td>+</td><td>Scroll faster.</td>' +
'</tr>' +
'<tr>' +
'<td></td><td></td>' +
'<td>-</td><td>Scroll slower.</td>' +
'</tr>' +
'<tr>' +
'<td></td><td></td>' +
'<td>?</td><td>Show help.</td>' +
'</tr>' +
'</table>';
this.popup.show(help, 1000);
this.timeout = setTimeout(this.showHelpHelper.bind(this), 1000);
}
}
/* Show original in new tab. */
GreaseReader.prototype.showOriginalTab = function() {
GM_openInTab(nodeFor('//a[@class = "launch-original"]/@href').textContent);
}
/* Toggle scroll next view. */
GreaseReader.prototype.viewNextAuto = function() {
if(this.status == this.statusViewNextAuto) {
this.status = this.statusHalt;
this.popup.show('Auto View Next - Off');
}
else {
this.status = this.statusViewNextAuto;
this.popup.show('Auto View Next - On');
this.viewNextAutoHelper();
}
}
GreaseReader.prototype.viewNextAutoHelper = function() {
if(this.status == this.statusViewNextAuto) {
if(this.statusNext() == this.statusLoaded) {
this.viewNext();
this.timeout = setTimeout(this.viewNextAutoHelper.bind(this), this.interval);
}
else
if(this.statusNext() == this.statusLoading) {
this.popup.show('Auto View Next - Wait');
this.timeout = setTimeout(this.viewNextAutoHelper.bind(this), 1000);
}
else {
this.viewNextAuto();
}
}
}
/* Toggle scroll previous view. */
GreaseReader.prototype.viewPreviousAuto = function() {
if(this.status == this.statusViewPreviousAuto) {
this.status = this.statusHalt;
this.popup.show('Auto View Previous - Off');
}
else {
this.status = this.statusViewPreviousAuto;
this.popup.show('Auto View Previous - On');
this.viewPreviousAutoHelper();
}
}
GreaseReader.prototype.viewPreviousAutoHelper = function() {
if(this.status == this.statusViewPreviousAuto) {
if(this.statusPrevious() == this.statusLoaded) {
this.viewPrevious();
this.timeout = setTimeout(this.viewPreviousAutoHelper.bind(this), this.interval);
}
else
if(this.statusPrevious() == this.statusLoading) {
this.popup.show('Auto View Previous - Wait');
this.timeout = setTimeout(this.viewPreviousAutoHelper.bind(this), 1000);
}
else {
this.viewPreviousAuto();
}
}
}
/* Toggle scroll next scan. */
GreaseReader.prototype.scanNextAuto = function() {
if(this.status == this.statusScanNextAuto) {
this.status = this.statusHalt;
this.popup.show('Auto Scan Next - Off');
}
else {
this.status = this.statusScanNextAuto;
this.popup.show('Auto Scan Next - On');
this.scanNextAutoHelper();
}
}
GreaseReader.prototype.scanNextAutoHelper = function() {
if(this.status == this.statusScanNextAuto) {
if(this.statusNext() == this.statusLoaded) {
this.scanNext();
this.timeout = setTimeout(this.scanNextAutoHelper.bind(this), this.interval);
}
else
if(this.statusNext() == this.statusLoading) {
this.popup.show('Auto Scan Next - Wait');
this.timeout = setTimeout(this.scanNextAutoHelper.bind(this), 1000);
}
else {
this.scanNextAuto();
}
}
}
/* Toggle scroll previous scan. */
GreaseReader.prototype.scanPreviousAuto = function() {
if(this.status == this.statusScanPreviousAuto) {
this.status = this.statusHalt;
this.popup.show('Auto Scan Previous - Off');
}
else {
this.status = this.statusScanPreviousAuto;
this.popup.show('Auto Scan Previous - On');
this.scanPreviousAutoHelper();
}
}
GreaseReader.prototype.scanPreviousAutoHelper = function() {
if(this.status == this.statusScanPreviousAuto) {
if(this.statusPrevious() == this.statusLoaded) {
this.scanPrevious();
this.timeout = setTimeout(this.scanPreviousAutoHelper.bind(this), this.interval);
}
else
if(this.statusPrevious() == this.statusLoading) {
this.popup.show('Auto Scan Previous - Wait');
this.timeout = setTimeout(this.scanPreviousAutoHelper.bind(this), 1000);
}
else {
this.scanPreviousAuto();
}
}
}
/* Scroll slower. */
GreaseReader.prototype.slower = function() {
this.interval = this.interval + 1000;
this.popup.show('Wait ' + (this.interval / 1000) + (this.interval == 1000 ? ' second before scrolling.' : ' seconds before scrolling.'));
this.persist();
}
/* Scroll faster. */
GreaseReader.prototype.faster = function() {
this.interval = (this.interval == 1000 ? this.interval : this.interval - 1000);
this.popup.show('Wait ' + (this.interval / 1000) + (this.interval == 1000 ? ' second before scrolling.' : ' seconds before scrolling.'));
this.persist();
}
/* Toggle unstar. */
GreaseReader.prototype.unstarAuto = function() {
if(this.status == this.statusUnstarAuto) {
this.status = this.statusHalt;
this.popup.show('Auto Unstar - Off');
}
else {
this.status = this.statusUnstarAuto;
this.popup.show('Auto Unstar - On');
this.loadStar();
this.unstarAutoHelper.bind(this);
}
}
GreaseReader.prototype.unstarAutoHelper = function() {
if(this.status == this.statusUnstarAuto) {
if(this.statusNext() == this.statusLoaded) {
this.star();
this.viewNext();
this.timeout = setTimeout(this.unstarAutoHelper.bind(this), this.interval);
}
else
if(this.statusNext() == this.statusLoading) {
this.popup.show('Auto Unstar - Wait');
this.timeout = setTimeout(this.unstarAutoHelper.bind(this), 1000);
}
else {
this.star();
this.unstarAuto();
}
}
}
/* End. */
GreaseReader.prototype.endAuto = function() {
if(this.status == this.statusEndAuto) {
this.status = this.statusHalt;
this.popup.show('Auto End - Off');
}
else {
this.status = this.statusEndAuto;
this.popup.show('Auto End - On');
this.endAutoHelper();
}
}
GreaseReader.prototype.endAutoHelper = function() {
if(this.status == this.statusEndAuto) {
if(this.statusNext() == this.statusLoaded) {
this.pageDown();
this.timeout = setTimeout(this.endAutoHelper.bind(this), 1000);
}
else
if(this.statusNext() == this.statusLoading) {
this.popup.show('Auto End - Wait');
this.timeout = setTimeout(this.endAutoHelper.bind(this), 1000);
}
else {
this.endAuto();
}
}
}
/* Reset timeout. */
GreaseReader.prototype.resetTimeout = function() {
clearTimeout(this.timeout);
if(this.status == this.statusScanNextAuto) {
this.timeout = setTimeout(this.scanNextAutoHelper.bind(this), this.interval);
}
else
if(this.status == this.statusScanPreviousAuto) {
this.timeout = setTimeout(this.scanPreviousAutoHelper.bind(this), this.interval);
}
else
if(this.status == this.statusViewNextAuto) {
this.timeout = setTimeout(this.viewNextAutoHelper.bind(this), this.interval);
}
else
if(this.status == this.statusViewPreviousAuto) {
this.timeout = setTimeout(this.viewPreviousAutoHelper.bind(this), this.interval);
}
else
if(this.status == this.statusUnstarAuto) {
this.timeout = setTimeout(this.unstarAutoHelper.bind(this), this.interval);
}
}
/* Persist interval. */
GreaseReader.prototype.persist = function() {
GM_setValue('interval', this.interval);
}
/* Run Grease Reader. */
GreaseReader.prototype.run = function() {
document.addEventListener('keypress', this.listen.bind(this), false);
document.addEventListener('DOMNodeInserted', this.listen.bind(this), false);
}
var GreaseReader = new GreaseReader();
GreaseReader.run();
