etherpad-lite/static/js/pad_userlist.js

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/**
* Copyright 2009 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS-IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var myUserInfo = {};
var colorPickerOpen = false;
var colorPickerSetup = false;
var previousColorId = 0;
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var paduserlist = (function() {
var rowManager = (function() {
// The row manager handles rendering rows of the user list and animating
// their insertion, removal, and reordering. It manipulates TD height
// and TD opacity.
function nextRowId() {
return "usertr"+(nextRowId.counter++);
}
nextRowId.counter = 1;
// objects are shared; fields are "domId","data","animationStep"
var rowsFadingOut = []; // unordered set
var rowsFadingIn = []; // unordered set
var rowsPresent = []; // in order
var ANIMATION_START = -12; // just starting to fade in
var ANIMATION_END = 12; // just finishing fading out
function getAnimationHeight(step, power) {
var a = Math.abs(step/12);
if (power == 2) a = a*a;
else if (power == 3) a = a*a*a;
else if (power == 4) a = a*a*a*a;
else if (power >= 5) a = a*a*a*a*a;
return Math.round(26*(1-a));
}
var OPACITY_STEPS = 6;
var ANIMATION_STEP_TIME = 20;
var LOWER_FRAMERATE_FACTOR = 2;
var scheduleAnimation = padutils.makeAnimationScheduler(animateStep, ANIMATION_STEP_TIME,
LOWER_FRAMERATE_FACTOR).scheduleAnimation;
var NUMCOLS = 4;
// we do lots of manipulation of table rows and stuff that JQuery makes ok, despite
// IE's poor handling when manipulating the DOM directly.
function getEmptyRowHtml(height) {
return '<td colspan="'+NUMCOLS+'" style="border:0;height:'+height+'px"><!-- --></td>';
}
function isNameEditable(data) {
return (! data.name) && (data.status != 'Disconnected');
}
function replaceUserRowContents(tr, height, data) {
var tds = getUserRowHtml(height, data).match(/<td.*?<\/td>/gi);
if (isNameEditable(data) && tr.find("td.usertdname input:enabled").length > 0) {
// preserve input field node
for(var i=0; i<tds.length; i++) {
var oldTd = $(tr.find("td").get(i));
if (! oldTd.hasClass('usertdname')) {
oldTd.replaceWith(tds[i]);
}
}
}
else {
tr.html(tds.join(''));
}
return tr;
}
function getUserRowHtml(height, data) {
var nameHtml;
var isGuest = (data.id.charAt(0) != 'p');
if (data.name) {
nameHtml = padutils.escapeHtml(data.name);
if (isGuest && pad.getIsProPad()) {
nameHtml += ' (Guest)';
}
}
else {
nameHtml = '<input type="text" class="editempty newinput" value="unnamed" '+
(isNameEditable(data) ? '' : 'disabled="disabled" ')+
'/>';
}
return ['<td style="height:',height,'px" class="usertdswatch"><div class="swatch" style="background:'+data.color+'">&nbsp;</div></td>',
'<td style="height:',height,'px" class="usertdname">',nameHtml,'</td>',
'<td style="height:',height,'px" class="usertdstatus">',padutils.escapeHtml(data.status),'</td>',
'<td style="height:',height,'px" class="activity">',padutils.escapeHtml(data.activity),'</td>'].join('');
}
function getRowHtml(id, innerHtml) {
return '<tr id="'+id+'">'+innerHtml+'</tr>';
}
function rowNode(row) {
return $("#"+row.domId);
}
function handleRowData(row) {
if (row.data && row.data.status == 'Disconnected') {
row.opacity = 0.5;
}
else {
delete row.opacity;
}
}
function handleRowNode(tr, data) {
if (data.titleText) {
var titleText = data.titleText;
window.setTimeout(function() { tr.attr('title', titleText )}, 0);
}
else {
tr.removeAttr('title');
}
}
function handleOtherUserInputs() {
// handle 'INPUT' elements for naming other unnamed users
$("#otheruserstable input.newinput").each(function() {
var input = $(this);
var tr = input.closest("tr");
if (tr.length > 0) {
var index = tr.parent().children().index(tr);
if (index >= 0) {
var userId = rowsPresent[index].data.id;
rowManagerMakeNameEditor($(this), userId);
}
}
}).removeClass('newinput');
}
// animationPower is 0 to skip animation, 1 for linear, 2 for quadratic, etc.
function insertRow(position, data, animationPower) {
position = Math.max(0, Math.min(rowsPresent.length, position));
animationPower = (animationPower === undefined ? 4 : animationPower);
var domId = nextRowId();
var row = {data: data, animationStep: ANIMATION_START, domId: domId,
animationPower: animationPower};
handleRowData(row);
rowsPresent.splice(position, 0, row);
var tr;
if (animationPower == 0) {
tr = $(getRowHtml(domId, getUserRowHtml(getAnimationHeight(0), data)));
row.animationStep = 0;
}
else {
rowsFadingIn.push(row);
tr = $(getRowHtml(domId, getEmptyRowHtml(getAnimationHeight(ANIMATION_START))));
}
handleRowNode(tr, data);
if (position == 0) {
$("table#otheruserstable").prepend(tr);
}
else {
rowNode(rowsPresent[position-1]).after(tr);
}
if (animationPower != 0) {
scheduleAnimation();
}
handleOtherUserInputs();
return row;
}
function updateRow(position, data) {
var row = rowsPresent[position];
if (row) {
row.data = data;
handleRowData(row);
if (row.animationStep == 0) {
// not currently animating
var tr = rowNode(row);
replaceUserRowContents(tr, getAnimationHeight(0), row.data).find(
"td").css('opacity', (row.opacity === undefined ? 1 : row.opacity));
handleRowNode(tr, data);
handleOtherUserInputs();
}
}
}
function removeRow(position, animationPower) {
animationPower = (animationPower === undefined ? 4 : animationPower);
var row = rowsPresent[position];
if (row) {
rowsPresent.splice(position, 1); // remove
if (animationPower == 0) {
rowNode(row).remove();
}
else {
row.animationStep = - row.animationStep; // use symmetry
row.animationPower = animationPower;
rowsFadingOut.push(row);
scheduleAnimation();
}
}
}
// newPosition is position after the row has been removed
function moveRow(oldPosition, newPosition, animationPower) {
animationPower = (animationPower === undefined ? 1 : animationPower); // linear is best
var row = rowsPresent[oldPosition];
if (row && oldPosition != newPosition) {
var rowData = row.data;
removeRow(oldPosition, animationPower);
insertRow(newPosition, rowData, animationPower);
}
}
function animateStep() {
// animation must be symmetrical
for(var i=rowsFadingIn.length-1;i>=0;i--) { // backwards to allow removal
var row = rowsFadingIn[i];
var step = ++row.animationStep;
var animHeight = getAnimationHeight(step, row.animationPower);
var node = rowNode(row);
var baseOpacity = (row.opacity === undefined ? 1 : row.opacity);
if (step <= -OPACITY_STEPS) {
node.find("td").height(animHeight);
}
else if (step == -OPACITY_STEPS+1) {
node.html(getUserRowHtml(animHeight, row.data)).find("td").css(
'opacity', baseOpacity*1/OPACITY_STEPS);
handleRowNode(node, row.data);
}
else if (step < 0) {
node.find("td").css('opacity', baseOpacity*(OPACITY_STEPS-(-step))/OPACITY_STEPS).height(animHeight);
}
else if (step == 0) {
// set HTML in case modified during animation
node.html(getUserRowHtml(animHeight, row.data)).find("td").css(
'opacity', baseOpacity*1).height(animHeight);
handleRowNode(node, row.data);
rowsFadingIn.splice(i, 1); // remove from set
}
}
for(var i=rowsFadingOut.length-1;i>=0;i--) { // backwards to allow removal
var row = rowsFadingOut[i];
var step = ++row.animationStep;
var node = rowNode(row);
var animHeight = getAnimationHeight(step, row.animationPower);
var baseOpacity = (row.opacity === undefined ? 1 : row.opacity);
if (step < OPACITY_STEPS) {
node.find("td").css('opacity', baseOpacity*(OPACITY_STEPS - step)/OPACITY_STEPS).height(animHeight);
}
else if (step == OPACITY_STEPS) {
node.html(getEmptyRowHtml(animHeight));
}
else if (step <= ANIMATION_END) {
node.find("td").height(animHeight);
}
else {
rowsFadingOut.splice(i, 1); // remove from set
node.remove();
}
}
handleOtherUserInputs();
return (rowsFadingIn.length > 0) || (rowsFadingOut.length > 0); // is more to do
}
var self = {
insertRow: insertRow,
removeRow: removeRow,
moveRow: moveRow,
updateRow: updateRow
};
return self;
}()); ////////// rowManager
var otherUsersInfo = [];
var otherUsersData = [];
function rowManagerMakeNameEditor(jnode, userId) {
setUpEditable(jnode, function() {
var existingIndex = findExistingIndex(userId);
if (existingIndex >= 0) {
return otherUsersInfo[existingIndex].name || '';
}
else {
return '';
}
}, function(newName) {
if (! newName) {
jnode.addClass("editempty");
jnode.val("unnamed");
}
else {
jnode.attr('disabled', 'disabled');
pad.suggestUserName(userId, newName);
}
});
}
function findExistingIndex(userId) {
var existingIndex = -1;
for(var i=0;i<otherUsersInfo.length;i++) {
if (otherUsersInfo[i].userId == userId) {
existingIndex = i;
break;
}
}
return existingIndex;
}
function setUpEditable(jqueryNode, valueGetter, valueSetter) {
jqueryNode.bind('focus', function(evt) {
var oldValue = valueGetter();
if (jqueryNode.val() !== oldValue) {
jqueryNode.val(oldValue);
}
jqueryNode.addClass("editactive").removeClass("editempty");
});
jqueryNode.bind('blur', function(evt) {
var newValue = jqueryNode.removeClass("editactive").val();
valueSetter(newValue);
});
padutils.bindEnterAndEscape(jqueryNode, function onEnter() {
jqueryNode.blur();
}, function onEscape() {
jqueryNode.val(valueGetter()).blur();
});
jqueryNode.removeAttr('disabled').addClass('editable');
}
function updateInviteNotice() {
if (otherUsersInfo.length == 0) {
$("#otheruserstable").hide();
$("#nootherusers").show();
}
else {
$("#nootherusers").hide();
$("#otheruserstable").show();
}
}
var knocksToIgnore = {};
var guestPromptFlashState = 0;
var guestPromptFlash = padutils.makeAnimationScheduler(
function () {
var prompts = $("#guestprompts .guestprompt");
if (prompts.length == 0) {
return false; // no more to do
}
guestPromptFlashState = 1 - guestPromptFlashState;
if (guestPromptFlashState) {
prompts.css('background', '#ffa');
}
else {
prompts.css('background', '#ffe');
}
return true;
}, 1000);
var self = {
init: function(myInitialUserInfo) {
self.setMyUserInfo(myInitialUserInfo);
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$("#otheruserstable tr").remove();
if (pad.getUserIsGuest()) {
$("#myusernameedit").addClass('myusernameedithoverable');
setUpEditable($("#myusernameedit"),
function() {
return myUserInfo.name || '';
},
function(newValue) {
myUserInfo.name = newValue;
pad.notifyChangeName(newValue);
// wrap with setTimeout to do later because we get
// a double "blur" fire in IE...
window.setTimeout(function() {
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self.renderMyUserInfo();
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}, 0);
});
}
// color picker
$("#myswatchbox").click(showColorPicker);
$("#mycolorpicker .pickerswatchouter").click(function() {
$("#mycolorpicker .pickerswatchouter").removeClass('picked');
$(this).addClass('picked');
});
$("#mycolorpickersave").click(function() {
closeColorPicker(true);
});
$("#mycolorpickercancel").click(function() {
closeColorPicker(false);
});
//
},
setMyUserInfo: function(info) {
myUserInfo = $.extend({}, info);
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self.renderMyUserInfo();
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},
userJoinOrUpdate: function(info) {
if ((! info.userId) || (info.userId == myUserInfo.userId)) {
// not sure how this would happen
return;
}
var userData = {};
userData.color = pad.getColorPalette()[info.colorId];
userData.name = info.name;
userData.status = '';
userData.activity = '';
userData.id = info.userId;
// Firefox ignores \n in title text; Safari does a linebreak
userData.titleText = [info.userAgent||'', info.ip||''].join(' \n');
var existingIndex = findExistingIndex(info.userId);
var numUsersBesides = otherUsersInfo.length;
if (existingIndex >= 0) {
numUsersBesides--;
}
var newIndex = padutils.binarySearch(numUsersBesides, function(n) {
if (existingIndex >= 0 && n >= existingIndex) {
// pretend existingIndex isn't there
n++;
}
var infoN = otherUsersInfo[n];
var nameN = (infoN.name||'').toLowerCase();
var nameThis = (info.name||'').toLowerCase();
var idN = infoN.userId;
var idThis = info.userId;
return (nameN > nameThis) || (nameN == nameThis &&
idN > idThis);
});
if (existingIndex >= 0) {
// update
if (existingIndex == newIndex) {
otherUsersInfo[existingIndex] = info;
otherUsersData[existingIndex] = userData;
rowManager.updateRow(existingIndex, userData);
}
else {
otherUsersInfo.splice(existingIndex, 1);
otherUsersData.splice(existingIndex, 1);
otherUsersInfo.splice(newIndex, 0, info);
otherUsersData.splice(newIndex, 0, userData);
rowManager.updateRow(existingIndex, userData);
rowManager.moveRow(existingIndex, newIndex);
}
}
else {
otherUsersInfo.splice(newIndex, 0, info);
otherUsersData.splice(newIndex, 0, userData);
rowManager.insertRow(newIndex, userData);
}
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updateInviteNotice();
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self.updateNumberOfOnlineUsers();
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},
updateNumberOfOnlineUsers: function(){
var online = 1; // you are always online!
for(var i=0;i<otherUsersData.length;i++) {
if(otherUsersData[i].status == "")
{
online++;
}
}
$("#online_count").text(online);
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return online;
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},
userLeave: function(info) {
var existingIndex = findExistingIndex(info.userId);
if (existingIndex >= 0) {
var userData = otherUsersData[existingIndex];
userData.status = 'Disconnected';
rowManager.updateRow(existingIndex, userData);
if (userData.leaveTimer) {
window.clearTimeout(userData.leaveTimer);
}
// set up a timer that will only fire if no leaves,
// joins, or updates happen for this user in the
// next N seconds, to remove the user from the list.
var thisUserId = info.userId;
var thisLeaveTimer = window.setTimeout(function() {
var newExistingIndex = findExistingIndex(thisUserId);
if (newExistingIndex >= 0) {
var newUserData = otherUsersData[newExistingIndex];
if (newUserData.status == 'Disconnected' &&
newUserData.leaveTimer == thisLeaveTimer) {
otherUsersInfo.splice(newExistingIndex, 1);
otherUsersData.splice(newExistingIndex, 1);
rowManager.removeRow(newExistingIndex);
updateInviteNotice();
}
}
}, 8000); // how long to wait
userData.leaveTimer = thisLeaveTimer;
}
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updateInviteNotice();
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self.updateNumberOfOnlineUsers();
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},
showGuestPrompt: function(userId, displayName) {
if (knocksToIgnore[userId]) {
return;
}
var encodedUserId = padutils.encodeUserId(userId);
var actionName = 'hide-guest-prompt-'+encodedUserId;
padutils.cancelActions(actionName);
var box = $("#guestprompt-"+encodedUserId);
if (box.length == 0) {
// make guest prompt box
box = $('<div id="guestprompt-'+encodedUserId+'" class="guestprompt"><div class="choices"><a href="javascript:void(paduserlist.answerGuestPrompt(\''+encodedUserId+'\',false))">Deny</a> <a href="javascript:void(paduserlist.answerGuestPrompt(\''+encodedUserId+'\',true))">Approve</a></div><div class="guestname"><strong>Guest:</strong> '+padutils.escapeHtml(displayName)+'</div></div>');
$("#guestprompts").append(box);
}
else {
// update display name
box.find(".guestname").html('<strong>Guest:</strong> '+padutils.escapeHtml(displayName));
}
var hideLater = padutils.getCancellableAction(actionName, function() {
self.removeGuestPrompt(userId);
});
window.setTimeout(hideLater, 15000); // time-out with no knock
guestPromptFlash.scheduleAnimation();
},
removeGuestPrompt: function(userId) {
var box = $("#guestprompt-"+padutils.encodeUserId(userId));
// remove ID now so a new knock by same user gets new, unfaded box
box.removeAttr('id').fadeOut("fast", function() {
box.remove();
});
knocksToIgnore[userId] = true;
window.setTimeout(function() {
delete knocksToIgnore[userId];
}, 5000);
},
answerGuestPrompt: function(encodedUserId, approve) {
var guestId = padutils.decodeUserId(encodedUserId);
var msg = {
type: 'guestanswer',
authId: pad.getUserId(),
guestId: guestId,
answer: (approve ? "approved" : "denied")
};
pad.sendClientMessage(msg);
self.removeGuestPrompt(guestId);
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},
renderMyUserInfo: function() {
if (myUserInfo.name) {
$("#myusernameedit").removeClass("editempty").val(
myUserInfo.name);
}
else {
$("#myusernameedit").addClass("editempty").val(
"Enter your name");
}
if (colorPickerOpen) {
$("#myswatchbox").addClass('myswatchboxunhoverable').removeClass(
'myswatchboxhoverable');
}
else {
$("#myswatchbox").addClass('myswatchboxhoverable').removeClass(
'myswatchboxunhoverable');
}
$("#myswatch").css('background', pad.getColorPalette()[myUserInfo.colorId]);
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}
};
return self;
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}());
function getColorPickerSwatchIndex(jnode) {
// return Number(jnode.get(0).className.match(/\bn([0-9]+)\b/)[1])-1;
return $("#colorpickerswatches li").index(jnode);
}
function closeColorPicker(accept) {
if (accept) {
var newColorId = getColorPickerSwatchIndex($("#colorpickerswatches .picked"));
if (newColorId >= 0) { // fails on NaN
myUserInfo.colorId = newColorId;
pad.notifyChangeColor(newColorId);
}
paduserlist.renderMyUserInfo();
} else {
pad.notifyChangeColor(previousColorId);
paduserlist.renderMyUserInfo();
}
colorPickerOpen = false;
$("#mycolorpicker").css('display', 'none');
}
function showColorPicker() {
previousColorId = myUserInfo.colorId ;
if (! colorPickerOpen) {
var palette = pad.getColorPalette();
if(!colorPickerSetup) {
var colorsList = $("#colorpickerswatches")
for(var i=0;i<palette.length;i++) {
var li = $('<li>', {
style: 'background: '+palette[i]+';'
});
li.appendTo(colorsList);
li.bind('click', function(event){
$("#colorpickerswatches li").removeClass('picked');
$(event.target).addClass("picked");
var newColorId = getColorPickerSwatchIndex($("#colorpickerswatches .picked"));
pad.notifyChangeColor(newColorId);
});
}
colorPickerSetup = true;
}
$("#mycolorpicker").css('display', 'block');
colorPickerOpen = true;
$("#colorpickerswatches li").removeClass('picked');
$($("#colorpickerswatches li")[myUserInfo.colorId]).addClass("picked"); //seems weird
}
}