c3c666e568
Fixes stuttering of conversejs overlayed dragresize UI elements over the iframes on the parent page.
98 lines
4.0 KiB
JavaScript
98 lines
4.0 KiB
JavaScript
/**
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* @module converse-dragresize
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* @copyright 2022, the Converse.js contributors
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* @license Mozilla Public License (MPLv2)
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*/
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import './components/dragresize.js';
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import { applyDragResistance, onMouseUp, onMouseMove } from './utils.js';
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import DragResizableMixin from './mixin.js';
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import { _converse, api, converse } from '@converse/headless/core';
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converse.plugins.add('converse-dragresize', {
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/* Plugin dependencies are other plugins which might be
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* overridden or relied upon, and therefore need to be loaded before
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* this plugin.
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*
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* If the setting "strict_plugin_dependencies" is set to true,
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* an error will be raised if the plugin is not found. By default it's
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* false, which means these plugins are only loaded opportunistically.
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*/
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dependencies: ['converse-chatview', 'converse-headlines-view', 'converse-muc-views'],
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enabled (_converse) {
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return _converse.api.settings.get('view_mode') == 'overlayed';
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},
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// Overrides mentioned here will be picked up by converse.js's
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// plugin architecture they will replace existing methods on the
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// relevant objects or classes.
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overrides: {
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ChatBox: {
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initialize () {
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const result = this.__super__.initialize.apply(this, arguments);
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const height = this.get('height');
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const width = this.get('width');
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const save = this.get('id') === 'controlbox' ? a => this.set(a) : a => this.save(a);
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save({
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'height': applyDragResistance(height, this.get('default_height')),
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'width': applyDragResistance(width, this.get('default_width'))
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});
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return result;
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}
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}
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},
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initialize () {
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/* The initialize function gets called as soon as the plugin is
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* loaded by converse.js's plugin machinery.
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*/
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api.settings.extend({
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'allow_dragresize': true
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});
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Object.assign(_converse.ChatBoxView.prototype, DragResizableMixin);
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Object.assign(_converse.ChatRoomView.prototype, DragResizableMixin);
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if (_converse.ControlBoxView) {
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Object.assign(_converse.ControlBoxView.prototype, DragResizableMixin);
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}
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/************************ BEGIN Event Handlers ************************/
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function registerGlobalEventHandlers () {
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document.addEventListener('mousemove', onMouseMove);
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document.addEventListener('mouseup', onMouseUp);
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}
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function unregisterGlobalEventHandlers () {
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document.removeEventListener('mousemove', onMouseMove);
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document.removeEventListener('mouseup', onMouseUp);
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}
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/**
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* This function registers mousedown and mouseup events hadlers to
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* all iframes in the DOM when converse UI resizing events are called
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* to prevent mouse drag stutter effect which is bad user experience.
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* @function dragresizeOverIframeHandler
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* @param {Object} e - dragging node element.
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*/
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function dragresizeOverIframeHandler (e) {
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const iframes = document.getElementsByTagName('iframe');
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for (let iframe of iframes) {
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e.addEventListener('mousedown', () => {
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iframe.style.pointerEvents = 'none';
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}, { once: true });
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e.addEventListener('mouseup', () => {
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iframe.style.pointerEvents = 'initial';
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}, { once: true });
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}
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}
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api.listen.on('registeredGlobalEventHandlers', registerGlobalEventHandlers);
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api.listen.on('unregisteredGlobalEventHandlers', unregisterGlobalEventHandlers);
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api.listen.on('beforeShowingChatView', view => view.initDragResize().setDimensions());
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api.listen.on('startDiagonalResize', dragresizeOverIframeHandler);
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api.listen.on('startHorizontalResize', dragresizeOverIframeHandler);
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api.listen.on('startVerticalResize', dragresizeOverIframeHandler);
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}
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});
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