##// END OF EJS Templates
wireproto: define frame to represent progress updates...
wireproto: define frame to represent progress updates Today, a long-running operation on a server may run without any sign of progress on the client. This can lead to the conclusion that the server has hung or the connection has dropped. In fact, connections can and do time out due to inactivity. And a long-running server operation can result in the connection dropping prematurely because no data is being sent! While we're inventing the new wire protocol, let's provide a mechanism for communicating progress on potentially expensive server-side events. We introduce a new frame type that conveys "progress" updates. This frame type essentially holds the data required to formulate a ``ui.progress()`` call. We only define the frame right now. Implementing it will be a bit of work since there is no analog to progress frames in the existing wire protocol. We'll need to teach the ui object to write to the wire protocol, etc. The use of a CBOR map may seem wasteful, as this will encode key names in every frame. This *is* wasteful. However, maps are extensible. And the intent is to always use compression via streams. Compression will make the overhead negligible since repeated strings will be mostly eliminated over the wire. Differential Revision: https://phab.mercurial-scm.org/D2902

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mercurial.js
556 lines | 14.8 KiB | application/javascript | JavascriptLexer
// mercurial.js - JavaScript utility functions
//
// Rendering of branch DAGs on the client side
// Display of elapsed time
// Show or hide diffstat
//
// Copyright 2008 Dirkjan Ochtman <dirkjan AT ochtman DOT nl>
// Copyright 2006 Alexander Schremmer <alex AT alexanderweb DOT de>
//
// derived from code written by Scott James Remnant <scott@ubuntu.com>
// Copyright 2005 Canonical Ltd.
//
// This software may be used and distributed according to the terms
// of the GNU General Public License, incorporated herein by reference.
var colors = [
[ 1.0, 0.0, 0.0 ],
[ 1.0, 1.0, 0.0 ],
[ 0.0, 1.0, 0.0 ],
[ 0.0, 1.0, 1.0 ],
[ 0.0, 0.0, 1.0 ],
[ 1.0, 0.0, 1.0 ]
];
function Graph() {
this.canvas = document.getElementById('graph');
this.ctx = this.canvas.getContext('2d');
this.ctx.strokeStyle = 'rgb(0, 0, 0)';
this.ctx.fillStyle = 'rgb(0, 0, 0)';
this.bg = [0, 4];
this.cell = [2, 0];
this.columns = 0;
}
Graph.prototype = {
reset: function() {
this.bg = [0, 4];
this.cell = [2, 0];
this.columns = 0;
},
scale: function(height) {
this.bg_height = height;
this.box_size = Math.floor(this.bg_height / 1.2);
this.cell_height = this.box_size;
},
setColor: function(color, bg, fg) {
// Set the colour.
//
// If color is a string, expect an hexadecimal RGB
// value and apply it unchanged. If color is a number,
// pick a distinct colour based on an internal wheel;
// the bg parameter provides the value that should be
// assigned to the 'zero' colours and the fg parameter
// provides the multiplier that should be applied to
// the foreground colours.
var s;
if(typeof color === "string") {
s = "#" + color;
} else { //typeof color === "number"
color %= colors.length;
var red = (colors[color][0] * fg) || bg;
var green = (colors[color][1] * fg) || bg;
var blue = (colors[color][2] * fg) || bg;
red = Math.round(red * 255);
green = Math.round(green * 255);
blue = Math.round(blue * 255);
s = 'rgb(' + red + ', ' + green + ', ' + blue + ')';
}
this.ctx.strokeStyle = s;
this.ctx.fillStyle = s;
return s;
},
edge: function(x0, y0, x1, y1, color, width) {
this.setColor(color, 0.0, 0.65);
if(width >= 0)
this.ctx.lineWidth = width;
this.ctx.beginPath();
this.ctx.moveTo(x0, y0);
this.ctx.lineTo(x1, y1);
this.ctx.stroke();
},
graphNodeCurrent: function(x, y, radius) {
this.ctx.lineWidth = 2;
this.ctx.beginPath();
this.ctx.arc(x, y, radius * 1.75, 0, Math.PI * 2, true);
this.ctx.stroke();
},
graphNodeClosing: function(x, y, radius) {
this.ctx.fillRect(x - radius, y - 1.5, radius * 2, 3);
},
graphNodeUnstable: function(x, y, radius) {
var x30 = radius * Math.cos(Math.PI / 6);
var y30 = radius * Math.sin(Math.PI / 6);
this.ctx.lineWidth = 2;
this.ctx.beginPath();
this.ctx.moveTo(x, y - radius);
this.ctx.lineTo(x, y + radius);
this.ctx.moveTo(x - x30, y - y30);
this.ctx.lineTo(x + x30, y + y30);
this.ctx.moveTo(x - x30, y + y30);
this.ctx.lineTo(x + x30, y - y30);
this.ctx.stroke();
},
graphNodeObsolete: function(x, y, radius) {
var p45 = radius * Math.cos(Math.PI / 4);
this.ctx.lineWidth = 3;
this.ctx.beginPath();
this.ctx.moveTo(x - p45, y - p45);
this.ctx.lineTo(x + p45, y + p45);
this.ctx.moveTo(x - p45, y + p45);
this.ctx.lineTo(x + p45, y - p45);
this.ctx.stroke();
},
graphNodeNormal: function(x, y, radius) {
this.ctx.beginPath();
this.ctx.arc(x, y, radius, 0, Math.PI * 2, true);
this.ctx.fill();
},
vertex: function(x, y, radius, color, parity, cur) {
this.ctx.save();
this.setColor(color, 0.25, 0.75);
if (cur.graphnode[0] === '@') {
this.graphNodeCurrent(x, y, radius);
}
switch (cur.graphnode.substr(-1)) {
case '_':
this.graphNodeClosing(x, y, radius);
break;
case '*':
this.graphNodeUnstable(x, y, radius);
break;
case 'x':
this.graphNodeObsolete(x, y, radius);
break;
default:
this.graphNodeNormal(x, y, radius);
}
this.ctx.restore();
var left = (this.bg_height - this.box_size) + (this.columns + 1) * this.box_size;
var item = document.querySelector('[data-node="' + cur.node + '"]');
if (item) {
item.style.paddingLeft = left + 'px';
}
},
render: function(data) {
var i, j, cur, line, start, end, color, x, y, x0, y0, x1, y1, column, radius;
var cols = 0;
for (i = 0; i < data.length; i++) {
cur = data[i];
for (j = 0; j < cur.edges.length; j++) {
line = cur.edges[j];
cols = Math.max(cols, line[0], line[1]);
}
}
this.canvas.width = (cols + 1) * this.bg_height;
this.canvas.height = (data.length + 1) * this.bg_height - 27;
for (i = 0; i < data.length; i++) {
var parity = i % 2;
this.cell[1] += this.bg_height;
this.bg[1] += this.bg_height;
cur = data[i];
var fold = false;
var prevWidth = this.ctx.lineWidth;
for (j = 0; j < cur.edges.length; j++) {
line = cur.edges[j];
start = line[0];
end = line[1];
color = line[2];
var width = line[3];
if(width < 0)
width = prevWidth;
var branchcolor = line[4];
if(branchcolor)
color = branchcolor;
if (end > this.columns || start > this.columns) {
this.columns += 1;
}
if (start === this.columns && start > end) {
fold = true;
}
x0 = this.cell[0] + this.box_size * start + this.box_size / 2;
y0 = this.bg[1] - this.bg_height / 2;
x1 = this.cell[0] + this.box_size * end + this.box_size / 2;
y1 = this.bg[1] + this.bg_height / 2;
this.edge(x0, y0, x1, y1, color, width);
}
this.ctx.lineWidth = prevWidth;
// Draw the revision node in the right column
column = cur.vertex[0];
color = cur.vertex[1];
radius = this.box_size / 8;
x = this.cell[0] + this.box_size * column + this.box_size / 2;
y = this.bg[1] - this.bg_height / 2;
this.vertex(x, y, radius, color, parity, cur);
if (fold) this.columns -= 1;
}
}
};
function process_dates(parentSelector){
// derived from code from mercurial/templatefilter.py
var scales = {
'year': 365 * 24 * 60 * 60,
'month': 30 * 24 * 60 * 60,
'week': 7 * 24 * 60 * 60,
'day': 24 * 60 * 60,
'hour': 60 * 60,
'minute': 60,
'second': 1
};
function format(count, string){
var ret = count + ' ' + string;
if (count > 1){
ret = ret + 's';
}
return ret;
}
function shortdate(date){
var ret = date.getFullYear() + '-';
// getMonth() gives a 0-11 result
var month = date.getMonth() + 1;
if (month <= 9){
ret += '0' + month;
} else {
ret += month;
}
ret += '-';
var day = date.getDate();
if (day <= 9){
ret += '0' + day;
} else {
ret += day;
}
return ret;
}
function age(datestr){
var now = new Date();
var once = new Date(datestr);
if (isNaN(once.getTime())){
// parsing error
return datestr;
}
var delta = Math.floor((now.getTime() - once.getTime()) / 1000);
var future = false;
if (delta < 0){
future = true;
delta = -delta;
if (delta > (30 * scales.year)){
return "in the distant future";
}
}
if (delta > (2 * scales.year)){
return shortdate(once);
}
for (var unit in scales){
if (!scales.hasOwnProperty(unit)) { continue; }
var s = scales[unit];
var n = Math.floor(delta / s);
if ((n >= 2) || (s === 1)){
if (future){
return format(n, unit) + ' from now';
} else {
return format(n, unit) + ' ago';
}
}
}
}
var nodes = document.querySelectorAll((parentSelector || '') + ' .age');
var dateclass = new RegExp('\\bdate\\b');
for (var i=0; i<nodes.length; ++i){
var node = nodes[i];
var classes = node.className;
var agevalue = age(node.textContent);
if (dateclass.test(classes)){
// We want both: date + (age)
node.textContent += ' ('+agevalue+')';
} else {
node.title = node.textContent;
node.textContent = agevalue;
}
}
}
function toggleDiffstat() {
var curdetails = document.getElementById('diffstatdetails').style.display;
var curexpand = curdetails === 'none' ? 'inline' : 'none';
document.getElementById('diffstatdetails').style.display = curexpand;
document.getElementById('diffstatexpand').style.display = curdetails;
}
function toggleLinewrap() {
function getLinewrap() {
var nodes = document.getElementsByClassName('sourcelines');
// if there are no such nodes, error is thrown here
return nodes[0].classList.contains('wrap');
}
function setLinewrap(enable) {
var nodes = document.getElementsByClassName('sourcelines');
var i;
for (i = 0; i < nodes.length; i++) {
if (enable) {
nodes[i].classList.add('wrap');
} else {
nodes[i].classList.remove('wrap');
}
}
var links = document.getElementsByClassName('linewraplink');
for (i = 0; i < links.length; i++) {
links[i].innerHTML = enable ? 'on' : 'off';
}
}
setLinewrap(!getLinewrap());
}
function format(str, replacements) {
return str.replace(/%(\w+)%/g, function(match, p1) {
return String(replacements[p1]);
});
}
function makeRequest(url, method, onstart, onsuccess, onerror, oncomplete) {
var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function() {
if (xhr.readyState === 4) {
try {
if (xhr.status === 200) {
onsuccess(xhr.responseText);
} else {
throw 'server error';
}
} catch (e) {
onerror(e);
} finally {
oncomplete();
}
}
};
xhr.open(method, url);
xhr.overrideMimeType("text/xhtml; charset=" + document.characterSet.toLowerCase());
xhr.send();
onstart();
return xhr;
}
function removeByClassName(className) {
var nodes = document.getElementsByClassName(className);
while (nodes.length) {
nodes[0].parentNode.removeChild(nodes[0]);
}
}
function docFromHTML(html) {
var doc = document.implementation.createHTMLDocument('');
doc.documentElement.innerHTML = html;
return doc;
}
function appendFormatHTML(element, formatStr, replacements) {
element.insertAdjacentHTML('beforeend', format(formatStr, replacements));
}
function adoptChildren(from, to) {
var nodes = from.children;
var curClass = 'c' + Date.now();
while (nodes.length) {
var node = nodes[0];
node = document.adoptNode(node);
node.classList.add(curClass);
to.appendChild(node);
}
process_dates('.' + curClass);
}
function ajaxScrollInit(urlFormat,
nextPageVar,
nextPageVarGet,
containerSelector,
messageFormat,
mode) {
var updateInitiated = false;
var container = document.querySelector(containerSelector);
function scrollHandler() {
if (updateInitiated) {
return;
}
var scrollHeight = document.documentElement.scrollHeight;
var clientHeight = document.documentElement.clientHeight;
var scrollTop = document.body.scrollTop || document.documentElement.scrollTop;
if (scrollHeight - (scrollTop + clientHeight) < 50) {
updateInitiated = true;
removeByClassName('scroll-loading-error');
container.lastElementChild.classList.add('scroll-separator');
if (!nextPageVar) {
var message = {
'class': 'scroll-loading-info',
text: 'No more entries'
};
appendFormatHTML(container, messageFormat, message);
return;
}
makeRequest(
format(urlFormat, {next: nextPageVar}),
'GET',
function onstart() {
var message = {
'class': 'scroll-loading',
text: 'Loading...'
};
appendFormatHTML(container, messageFormat, message);
},
function onsuccess(htmlText) {
var doc = docFromHTML(htmlText);
if (mode === 'graph') {
var graph = window.graph;
var dataStr = htmlText.match(/^\s*var data = (.*);$/m)[1];
var data = JSON.parse(dataStr);
graph.reset();
adoptChildren(doc.querySelector('#graphnodes'), container.querySelector('#graphnodes'));
graph.render(data);
} else {
adoptChildren(doc.querySelector(containerSelector), container);
}
nextPageVar = nextPageVarGet(htmlText);
},
function onerror(errorText) {
var message = {
'class': 'scroll-loading-error',
text: 'Error: ' + errorText
};
appendFormatHTML(container, messageFormat, message);
},
function oncomplete() {
removeByClassName('scroll-loading');
updateInitiated = false;
scrollHandler();
}
);
}
}
window.addEventListener('scroll', scrollHandler);
window.addEventListener('resize', scrollHandler);
scrollHandler();
}
function renderDiffOptsForm() {
// We use URLSearchParams for query string manipulation. Old browsers don't
// support this API.
if (!("URLSearchParams" in window)) {
return;
}
var form = document.getElementById("diffopts-form");
var KEYS = [
"ignorews",
"ignorewsamount",
"ignorewseol",
"ignoreblanklines",
];
var urlParams = new window.URLSearchParams(window.location.search);
function updateAndRefresh(e) {
var checkbox = e.target;
var name = checkbox.id.substr(0, checkbox.id.indexOf("-"));
urlParams.set(name, checkbox.checked ? "1" : "0");
window.location.search = urlParams.toString();
}
var allChecked = form.getAttribute("data-ignorews") === "1";
for (var i = 0; i < KEYS.length; i++) {
var key = KEYS[i];
var checkbox = document.getElementById(key + "-checkbox");
if (!checkbox) {
continue;
}
var currentValue = form.getAttribute("data-" + key);
checkbox.checked = currentValue !== "0";
// ignorews implies ignorewsamount and ignorewseol.
if (allChecked && (key === "ignorewsamount" || key === "ignorewseol")) {
checkbox.checked = true;
checkbox.disabled = true;
}
checkbox.addEventListener("change", updateAndRefresh, false);
}
form.style.display = 'block';
}
document.addEventListener('DOMContentLoaded', function() {
process_dates();
}, false);