2018-04-12 01:58:04 +03:00
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/*
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Copyright 2015, 2016 OpenMarket Ltd
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Copyright 2019 New Vector Ltd
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2019-07-31 14:19:29 +03:00
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Copyright 2019 Michael Telatynski <7t3chguy@gmail.com>
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2018-04-12 01:58:04 +03:00
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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2018-06-12 17:22:45 +03:00
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import React from 'react';
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import ReactDOM from 'react-dom';
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import PropTypes from 'prop-types';
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import createReactClass from 'create-react-class';
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import dis from '../../../dispatcher';
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2018-04-12 01:58:04 +03:00
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import classNames from 'classnames';
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const MIN_TOOLTIP_HEIGHT = 25;
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module.exports = createReactClass({
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displayName: 'Tooltip',
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propTypes: {
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// Class applied to the element used to position the tooltip
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className: PropTypes.string,
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// Class applied to the tooltip itself
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tooltipClassName: PropTypes.string,
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// Whether the tooltip is visible or hidden.
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// The hidden state allows animating the tooltip away via CSS.
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// Defaults to visible if unset.
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visible: PropTypes.bool,
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// the react element to put into the tooltip
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label: PropTypes.node,
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},
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getDefaultProps() {
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return {
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visible: true,
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};
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},
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// Create a wrapper for the tooltip outside the parent and attach it to the body element
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componentDidMount: function() {
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this.tooltipContainer = document.createElement("div");
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this.tooltipContainer.className = "mx_Tooltip_wrapper";
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document.body.appendChild(this.tooltipContainer);
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window.addEventListener('scroll', this._renderTooltip, true);
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this.parent = ReactDOM.findDOMNode(this).parentNode;
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this._renderTooltip();
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},
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componentDidUpdate: function() {
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this._renderTooltip();
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},
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// Remove the wrapper element, as the tooltip has finished using it
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componentWillUnmount: function() {
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dis.dispatch({
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action: 'view_tooltip',
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tooltip: null,
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parent: null,
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});
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ReactDOM.unmountComponentAtNode(this.tooltipContainer);
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document.body.removeChild(this.tooltipContainer);
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window.removeEventListener('scroll', this._renderTooltip, true);
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},
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_updatePosition(style) {
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const parentBox = this.parent.getBoundingClientRect();
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let offset = 0;
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if (parentBox.height > MIN_TOOLTIP_HEIGHT) {
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offset = Math.floor((parentBox.height - MIN_TOOLTIP_HEIGHT) / 2);
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} else {
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// The tooltip is larger than the parent height: figure out what offset
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// we need so that we're still centered.
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offset = Math.floor(parentBox.height - MIN_TOOLTIP_HEIGHT);
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}
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style.top = (parentBox.top - 2) + window.pageYOffset + offset;
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style.left = 6 + parentBox.right + window.pageXOffset;
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return style;
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},
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_renderTooltip: function() {
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// Add the parent's position to the tooltips, so it's correctly
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// positioned, also taking into account any window zoom
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// NOTE: The additional 6 pixels for the left position, is to take account of the
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// tooltips chevron
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const parent = ReactDOM.findDOMNode(this).parentNode;
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let style = {};
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style = this._updatePosition(style);
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style.display = "block";
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const tooltipClasses = classNames("mx_Tooltip", this.props.tooltipClassName, {
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"mx_Tooltip_visible": this.props.visible,
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"mx_Tooltip_invisible": !this.props.visible,
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});
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const tooltip = (
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<div className={tooltipClasses} style={style}>
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<div className="mx_Tooltip_chevron" />
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{ this.props.label }
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</div>
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);
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// Render the tooltip manually, as we wish it not to be rendered within the parent
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this.tooltip = ReactDOM.render(tooltip, this.tooltipContainer);
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// Tell the roomlist about us so it can manipulate us if it wishes
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dis.dispatch({
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action: 'view_tooltip',
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tooltip: this.tooltip,
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parent: parent,
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});
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},
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render: function() {
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// Render a placeholder
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return (
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<div className={this.props.className} >
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</div>
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);
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},
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});
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