/**
* @module converse-dragresize
* @copyright 2020, the Converse.js contributors
* @license Mozilla Public License (MPLv2)
*/
import "converse-chatview";
import "converse-controlbox";
import { debounce } from "lodash-es";
import { _converse, api, converse } from "@converse/headless/converse-core";
import tpl_dragresize from "templates/dragresize.html";
const u = converse.env.utils;
function renderDragResizeHandles (_converse, view) {
const flyout = view.el.querySelector('.box-flyout');
const div = document.createElement('div');
div.innerHTML = tpl_dragresize();
flyout.insertBefore(
div,
flyout.firstChild
);
}
converse.plugins.add('converse-dragresize', {
/* Plugin dependencies are other plugins which might be
* overridden or relied upon, and therefore need to be loaded before
* this plugin.
*
* If the setting "strict_plugin_dependencies" is set to true,
* an error will be raised if the plugin is not found. By default it's
* false, which means these plugins are only loaded opportunistically.
*
* NB: These plugins need to have already been loaded via require.js.
*/
dependencies: ["converse-chatview", "converse-headlines-view", "converse-muc-views"],
enabled (_converse) {
return _converse.api.settings.get("view_mode") == 'overlayed';
},
overrides: {
// Overrides mentioned here will be picked up by converse.js's
// plugin architecture they will replace existing methods on the
// relevant objects or classes.
ChatBox: {
initialize () {
const result = this.__super__.initialize.apply(this, arguments);
const height = this.get('height'), width = this.get('width');
const save = this.get('id') === 'controlbox' ? a => this.set(a) : a => this.save(a);
save({
'height': u.applyDragResistance(height, this.get('default_height')),
'width': u.applyDragResistance(width, this.get('default_width')),
});
return result;
}
},
ChatBoxView: {
events: {
'mousedown .dragresize-top': 'onStartVerticalResize',
'mousedown .dragresize-left': 'onStartHorizontalResize',
'mousedown .dragresize-topleft': 'onStartDiagonalResize'
},
render () {
const result = this.__super__.render.apply(this, arguments);
renderDragResizeHandles(this.__super__._converse, this);
this.setWidth();
return result;
}
},
HeadlinesBoxView: {
events: {
'mousedown .dragresize-top': 'onStartVerticalResize',
'mousedown .dragresize-left': 'onStartHorizontalResize',
'mousedown .dragresize-topleft': 'onStartDiagonalResize'
},
render () {
const result = this.__super__.render.apply(this, arguments);
renderDragResizeHandles(this.__super__._converse, this);
this.setWidth();
return result;
}
},
ControlBoxView: {
events: {
'mousedown .dragresize-top': 'onStartVerticalResize',
'mousedown .dragresize-left': 'onStartHorizontalResize',
'mousedown .dragresize-topleft': 'onStartDiagonalResize'
},
render () {
const result = this.__super__.render.apply(this, arguments);
renderDragResizeHandles(this.__super__._converse, this);
this.setWidth();
return result;
},
renderLoginPanel () {
const result = this.__super__.renderLoginPanel.apply(this, arguments);
this.initDragResize().setDimensions();
return result;
},
renderControlBoxPane () {
const result = this.__super__.renderControlBoxPane.apply(this, arguments);
this.initDragResize().setDimensions();
return result;
}
},
ChatRoomView: {
events: {
'mousedown .dragresize-top': 'onStartVerticalResize',
'mousedown .dragresize-left': 'onStartHorizontalResize',
'mousedown .dragresize-topleft': 'onStartDiagonalResize'
},
render () {
const result = this.__super__.render.apply(this, arguments);
renderDragResizeHandles(this.__super__._converse, this);
this.setWidth();
return result;
}
}
},
initialize () {
/* The initialize function gets called as soon as the plugin is
* loaded by converse.js's plugin machinery.
*/
api.settings.extend({
'allow_dragresize': true,
});
const dragResizable = {
initDragResize () {
const view = this;
const debouncedSetDimensions = debounce(() => view.setDimensions());
window.addEventListener('resize', view.debouncedSetDimensions)
this.listenTo(this.model, 'destroy', () => window.removeEventListener('resize', debouncedSetDimensions));
// Determine and store the default box size.
// We need this information for the drag-resizing feature.
const flyout = this.el.querySelector('.box-flyout');
const style = window.getComputedStyle(flyout);
if (this.model.get('height') === undefined) {
const height = parseInt(style.height.replace(/px$/, ''), 10);
const width = parseInt(style.width.replace(/px$/, ''), 10);
this.model.set('height', height);
this.model.set('default_height', height);
this.model.set('width', width);
this.model.set('default_width', width);
}
const min_width = style['min-width'];
const min_height = style['min-height'];
this.model.set('min_width', min_width.endsWith('px') ? Number(min_width.replace(/px$/, '')) :0);
this.model.set('min_height', min_height.endsWith('px') ? Number(min_height.replace(/px$/, '')) :0);
// Initialize last known mouse position
this.prev_pageY = 0;
this.prev_pageX = 0;
if (_converse.connection?.connected) {
this.height = this.model.get('height');
this.width = this.model.get('width');
}
return this;
},
resizeChatBox (ev) {
let diff;
if (_converse.resizing.direction.indexOf('top') === 0) {
diff = ev.pageY - this.prev_pageY;
if (diff) {
this.height = ((this.height-diff) > (this.model.get('min_height') || 0)) ? (this.height-diff) : this.model.get('min_height');
this.prev_pageY = ev.pageY;
this.setChatBoxHeight(this.height);
}
}
if (_converse.resizing.direction.includes('left')) {
diff = this.prev_pageX - ev.pageX;
if (diff) {
this.width = ((this.width+diff) > (this.model.get('min_width') || 0)) ? (this.width+diff) : this.model.get('min_width');
this.prev_pageX = ev.pageX;
this.setChatBoxWidth(this.width);
}
}
},
setWidth () {
// If a custom width is applied (due to drag-resizing),
// then we need to set the width of the .chatbox element as well.
if (this.model.get('width')) {
this.el.style.width = this.model.get('width');
}
},
setDimensions () {
// Make sure the chat box has the right height and width.
this.adjustToViewport();
this.setChatBoxHeight(this.model.get('height'));
this.setChatBoxWidth(this.model.get('width'));
},
setChatBoxHeight (height) {
if (height) {
height = u.applyDragResistance(height, this.model.get('default_height'))+'px';
} else {
height = "";
}
const flyout_el = this.el.querySelector('.box-flyout');
if (flyout_el !== null) {
flyout_el.style.height = height;
}
},
setChatBoxWidth (width) {
if (width) {
width = u.applyDragResistance(width, this.model.get('default_width'))+'px';
} else {
width = "";
}
this.el.style.width = width;
const flyout_el = this.el.querySelector('.box-flyout');
if (flyout_el !== null) {
flyout_el.style.width = width;
}
},
adjustToViewport () {
/* Event handler called when viewport gets resized. We remove
* custom width/height from chat boxes.
*/
const viewport_width = Math.max(document.documentElement.clientWidth, window.innerWidth || 0);
const viewport_height = Math.max(document.documentElement.clientHeight, window.innerHeight || 0);
if (viewport_width <= 480) {
this.model.set('height', undefined);
this.model.set('width', undefined);
} else if (viewport_width <= this.model.get('width')) {
this.model.set('width', undefined);
} else if (viewport_height <= this.model.get('height')) {
this.model.set('height', undefined);
}
},
onStartVerticalResize (ev, trigger=true) {
if (!api.settings.get('allow_dragresize')) {
return true;
}
ev.preventDefault();
// Record element attributes for mouseMove().
const flyout = this.el.querySelector('.box-flyout'),
style = window.getComputedStyle(flyout);
this.height = parseInt(style.height.replace(/px$/, ''), 10);
_converse.resizing = {
'chatbox': this,
'direction': 'top'
};
this.prev_pageY = ev.pageY;
if (trigger) {
/**
* Triggered once the user starts to vertically resize a {@link _converse.ChatBoxView}
* @event _converse#startVerticalResize
* @example _converse.api.listen.on('startVerticalResize', (view) => { ... });
*/
api.trigger('startVerticalResize', this);
}
},
onStartHorizontalResize (ev, trigger=true) {
if (!api.settings.get('allow_dragresize')) {
return true;
}
ev.preventDefault();
const flyout = this.el.querySelector('.box-flyout'),
style = window.getComputedStyle(flyout);
this.width = parseInt(style.width.replace(/px$/, ''), 10);
_converse.resizing = {
'chatbox': this,
'direction': 'left'
};
this.prev_pageX = ev.pageX;
if (trigger) {
/**
* Triggered once the user starts to horizontally resize a {@link _converse.ChatBoxView}
* @event _converse#startHorizontalResize
* @example _converse.api.listen.on('startHorizontalResize', (view) => { ... });
*/
api.trigger('startHorizontalResize', this);
}
},
onStartDiagonalResize (ev) {
this.onStartHorizontalResize(ev, false);
this.onStartVerticalResize(ev, false);
_converse.resizing.direction = 'topleft';
/**
* Triggered once the user starts to diagonally resize a {@link _converse.ChatBoxView}
* @event _converse#startDiagonalResize
* @example _converse.api.listen.on('startDiagonalResize', (view) => { ... });
*/
api.trigger('startDiagonalResize', this);
},
};
Object.assign(_converse.ChatBoxView.prototype, dragResizable);
u.applyDragResistance = function (value, default_value) {
/* This method applies some resistance around the
* default_value. If value is close enough to
* default_value, then default_value is returned instead.
*/
if (value === undefined) {
return undefined;
} else if (default_value === undefined) {
return value;
}
const resistance = 10;
if ((value !== default_value) &&
(Math.abs(value- default_value) < resistance)) {
return default_value;
}
return value;
};
function onMouseMove (ev) {
if (!_converse.resizing || !api.settings.get('allow_dragresize')) {
return true;
}
ev.preventDefault();
_converse.resizing.chatbox.resizeChatBox(ev);
}
function onMouseUp (ev) {
if (!_converse.resizing || !api.settings.get('allow_dragresize')) {
return true;
}
ev.preventDefault();
const height = u.applyDragResistance(
_converse.resizing.chatbox.height,
_converse.resizing.chatbox.model.get('default_height')
);
const width = u.applyDragResistance(
_converse.resizing.chatbox.width,
_converse.resizing.chatbox.model.get('default_width')
);
if (api.connection.connected()) {
_converse.resizing.chatbox.model.save({'height': height});
_converse.resizing.chatbox.model.save({'width': width});
} else {
_converse.resizing.chatbox.model.set({'height': height});
_converse.resizing.chatbox.model.set({'width': width});
}
_converse.resizing = null;
}
/************************ BEGIN Event Handlers ************************/
function registerGlobalEventHandlers () {
document.addEventListener('mousemove', onMouseMove);
document.addEventListener('mouseup', onMouseUp);
}
function unregisterGlobalEventHandlers () {
document.removeEventListener('mousemove', onMouseMove);
document.removeEventListener('mouseup', onMouseUp);
}
api.listen.on('registeredGlobalEventHandlers', registerGlobalEventHandlers);
api.listen.on('unregisteredGlobalEventHandlers', unregisterGlobalEventHandlers);
api.listen.on('beforeShowingChatView', view => view.initDragResize().setDimensions());
/************************ END Event Handlers ************************/
}
});