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/**
* Copyright 2017-2021 Florian Bruhin (The-Compiler) <me@the-compiler.org>
* Copyright 2017 Imran Sobir
*
* This file is part of qutebrowser.
*
* qutebrowser is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* qutebrowser is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with qutebrowser. If not, see <https://www.gnu.org/licenses/>.
*/
"use strict";
window.loadHistory = (function() {
// Date of last seen item.
let lastItemDate = null;
// Each request for new items includes the time of the last item and an
// offset. The offset is equal to the number of items from the previous
// request that had time=nextTime, and causes the next request to skip
// those items to avoid duplicates.
let nextTime = null;
let nextOffset = 0;
// The URL to fetch data from.
const DATA_URL = "qute://history/data";
// Various fixed elements
const EOF_MESSAGE = document.getElementById("eof");
const LOAD_LINK = document.getElementById("load");
const HIST_CONTAINER = document.getElementById("hist-container");
/**
* Finds or creates the session table>tbody to which item with given date
* should be added.
*
* @param {Date} date - the date of the item being added.
* @returns {Element} the element to which new rows should be added.
*/
function getSessionNode(date) {
// Find/create table
const tableId = ["hist", date.getDate(), date.getMonth(),
date.getYear()].join("-");
let table = document.getElementById(tableId);
if (table === null) {
table = document.createElement("table");
table.id = tableId;
// Caption contains human-readable date
const caption = document.createElement("caption");
caption.className = "date";
const options = {
"weekday": "long",
"year": "numeric",
"month": "long",
"day": "numeric",
};
caption.innerHTML = date.toLocaleDateString("en-US", options);
table.appendChild(caption);
// Add table to page
HIST_CONTAINER.appendChild(table);
}
// Find/create tbody
let tbody = table.lastChild;
if (tbody.tagName !== "TBODY") {
tbody = document.createElement("tbody");
table.appendChild(tbody);
}
// Create session-separator and new tbody if necessary
if (tbody.lastChild !== null && lastItemDate !== null &&
window.GAP_INTERVAL > 0) {
const interval = lastItemDate.getTime() - date.getTime();
if (interval > window.GAP_INTERVAL) {
// Add session-separator
const sessionSeparator = document.createElement("td");
sessionSeparator.className = "session-separator";
sessionSeparator.colSpan = 2;
sessionSeparator.innerHTML = "§";
table.appendChild(document.createElement("tr"));
table.lastChild.appendChild(sessionSeparator);
// Create new tbody
tbody = document.createElement("tbody");
table.appendChild(tbody);
}
}
return tbody;
}
/**
* Given a history item, create and return <tr> for it.
*
* @param {string} itemUrl - The url for this item.
* @param {string} itemTitle - The title for this item.
* @param {string} itemTime - The formatted time for this item.
* @returns {Element} the completed tr.
*/
function makeHistoryRow(itemUrl, itemTitle, itemTime) {
const row = document.createElement("tr");
const title = document.createElement("td");
title.className = "title";
const link = document.createElement("a");
link.href = itemUrl;
link.innerHTML = itemTitle; // Properly escaped in qutescheme.py
const host = document.createElement("span");
host.className = "hostname";
host.innerHTML = link.hostname;
title.appendChild(link);
title.appendChild(host);
const time = document.createElement("td");
time.className = "time";
time.innerHTML = itemTime;
row.appendChild(title);
row.appendChild(time);
return row;
}
/**
* Get JSON from given URL.
*
* @param {string} url - the url to fetch data from.
* @param {function} callback - the function to callback with data.
* @returns {void}
*/
function getJSON(url, callback) {
const xhr = new XMLHttpRequest();
xhr.open("GET", url, true);
xhr.responseType = "json";
xhr.onload = () => {
const status = xhr.status;
callback(status, xhr.response);
};
xhr.send();
}
/**
* Receive history data from qute://history/data.
*
* @param {Number} status - The status of the query.
* @param {Array} history - History data.
* @returns {void}
*/
function receiveHistory(status, history) {
if (history === null) {
return;
}
if (history.length === 0) {
// Reached end of history
window.onscroll = null;
EOF_MESSAGE.style.display = "block";
LOAD_LINK.style.display = "none";
return;
}
nextTime = history[history.length - 1].time;
nextOffset = 0;
for (let i = 0, len = history.length; i < len; i++) {
const item = history[i];
// python's time.time returns seconds, but js Date expects ms
const currentItemDate = new Date(item.time * 1000);
getSessionNode(currentItemDate).appendChild(makeHistoryRow(
item.url, item.title, currentItemDate.toLocaleTimeString()
));
lastItemDate = currentItemDate;
if (item.time === nextTime) {
nextOffset++;
}
}
}
/**
* Load new history.
* @return {void}
*/
function loadHistory() {
let url = DATA_URL.concat("?offset=", nextOffset.toString());
if (nextTime === null) {
getJSON(url, receiveHistory);
} else {
url = url.concat("&start_time=", nextTime.toString());
getJSON(url, receiveHistory);
}
}
return loadHistory;
})();
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