Mercurial > libervia-templates
annotate sat_templates/templates/default/static/chat.js @ 323:34b8de7be336
bulma (base): show breadcrumbs
author | Goffi <goffi@goffi.org> |
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date | Thu, 29 Apr 2021 20:52:17 +0200 |
parents | e9f0a4215e46 |
children | 6a26c8a43d10 |
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1 /* SàT Template: Chat page handling |
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2 * |
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3 * Copyright (C) 2017 Jérôme Poisson (goffi@goffi.org) |
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4 * |
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5 * This program is free software: you can redistribute it and/or modify |
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6 * it under the terms of the GNU Affero General Public License as published by |
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7 * the Free Software Foundation, either version 3 of the License, or |
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8 * (at your option) any later version. |
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9 * |
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10 * This program is distributed in the hope that it will be useful, |
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 * GNU Affero General Public License for more details. |
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14 * |
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15 * You should have received a copy of the GNU Affero General Public License |
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16 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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17 */ |
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18 |
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19 |
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20 var msgInput = document.getElementById('message_input'); |
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21 var messages = document.getElementById('messages'); |
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22 const messagesTransitionOri = messages.style.transition; |
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23 |
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24 msgInput.addEventListener('keypress', function(event) { |
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25 if (event.which == 13 && !event.shiftKey) { |
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26 if (messages.style.height !== '100%') { |
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27 messages.style.transition = messagesTransitionOri; |
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28 setTimeout(function() { |
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29 messages.style.transition = 'initial'; |
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30 messages.scrollTop = messages.scrollHeight; |
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31 }, 1000); |
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32 messages.style.height = "100%"; |
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33 } |
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34 if (!this.value.trim()) { |
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35 return; |
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36 } |
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37 socket.send({'type': 'msg', |
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38 'body': this.value}); |
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39 this.value = ''; |
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40 event.preventDefault(); |
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41 }} |
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42 ); |
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43 |
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44 var mutationCb = function(mutationsList) { |
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45 scrollPos = messages.scrollTop + messages.clientHeight; |
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46 if (messages.lastChild.offsetTop - scrollPos - 10 <= 0) { |
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47 // we auto scroll only if we are at the bottom of the page |
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48 // else the use is probably checking history |
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49 // Note thas this doesn't take margin into account, |
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50 // we suppose margin to be 0 for messages children |
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51 messages.scrollTop = messages.scrollHeight; |
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52 } |
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53 }; |
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54 |
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55 var observer = new MutationObserver(mutationCb); |
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56 |
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57 observer.observe(messages, { childList: true }); |
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58 // we want to start with scrolling at bottom |
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59 messages.scrollTop = messages.scrollHeight; |
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60 messages.style.transition = 'initial'; |