Mailspring/app/internal_packages/composer-emoji/lib/emoji-button-popover.jsx
2017-09-26 11:33:08 -07:00

333 lines
10 KiB
JavaScript

import React from 'react';
import { Actions } from 'nylas-exports';
import { RetinaImg, ScrollRegion } from 'nylas-component-kit';
import EmojiStore from './emoji-store';
import EmojiActions from './emoji-actions';
import categorizedEmojiList from './categorized-emoji';
class EmojiButtonPopover extends React.Component {
static displayName = 'EmojiButtonPopover';
constructor() {
super();
const { categoryNames, categorizedEmoji, categoryPositions } = this.getStateFromStore();
this.state = {
emojiName: 'Emoji Picker',
categoryNames: categoryNames,
categorizedEmoji: categorizedEmoji,
categoryPositions: categoryPositions,
searchValue: '',
activeTab: Object.keys(categorizedEmoji)[0],
};
}
componentDidMount() {
this._mounted = true;
this._emojiPreloadImage = new Image();
this.renderCanvas();
}
componentWillUnmount() {
this._emojiPreloadImage.onload = null;
this._emojiPreloadImage = null;
this._mounted = false;
}
onMouseDown = event => {
const emojiName = this.calcEmojiByPosition(this.calcPosition(event));
if (!emojiName) return null;
EmojiActions.selectEmoji({ emojiName: emojiName, replaceSelection: false });
Actions.closePopover();
return null;
};
onScroll = () => {
const emojiContainer = document.querySelector('.emoji-finder-container .scroll-region-content');
const tabContainer = document.querySelector('.emoji-tabs');
tabContainer.className = emojiContainer.scrollTop ? 'emoji-tabs shadow' : 'emoji-tabs';
if (emojiContainer.scrollTop === 0) {
this.setState({ activeTab: Object.keys(this.state.categorizedEmoji)[0] });
} else {
for (const category of Object.keys(this.state.categoryPositions)) {
if (
emojiContainer.scrollTop >= this.state.categoryPositions[category].top &&
emojiContainer.scrollTop <= this.state.categoryPositions[category].bottom
) {
this.setState({ activeTab: category });
}
}
}
};
onHover = event => {
const emojiName = this.calcEmojiByPosition(this.calcPosition(event));
if (emojiName) {
this.setState({ emojiName: emojiName });
} else {
this.setState({ emojiName: 'Emoji Picker' });
}
};
onMouseOut = () => {
this.setState({ emojiName: 'Emoji Picker' });
};
onChange = event => {
const searchValue = event.target.value;
if (searchValue.length > 0) {
const searchMatches = this.findSearchMatches(searchValue);
this.setState(
{
categorizedEmoji: {
'Search Results': searchMatches,
},
categoryPositions: {
'Search Results': {
top: 25,
bottom: 25 + Math.ceil(searchMatches.length / 8) * 24,
},
},
searchValue: searchValue,
activeTab: null,
},
this.renderCanvas
);
} else {
this.setState(this.getStateFromStore, () => {
this.setState(
{
searchValue: searchValue,
activeTab: Object.keys(this.state.categorizedEmoji)[0],
},
this.renderCanvas
);
});
}
};
getStateFromStore = () => {
let categorizedEmoji = categorizedEmojiList;
const categoryPositions = {};
let categoryNames = [
'People',
'Nature',
'Food and Drink',
'Activity',
'Travel and Places',
'Objects',
'Symbols',
'Flags',
];
const frequentlyUsedEmoji = EmojiStore.frequentlyUsedEmoji();
if (frequentlyUsedEmoji.length > 0) {
categorizedEmoji = { 'Frequently Used': frequentlyUsedEmoji };
for (const category of Object.keys(categorizedEmojiList)) {
categorizedEmoji[category] = categorizedEmojiList[category];
}
categoryNames = ['Frequently Used'].concat(categoryNames);
}
// Calculates where each category should be (variable because Frequently
// Used may or may not be present)
for (const name of categoryNames) {
categoryPositions[name] = { top: 0, bottom: 0 };
}
let verticalPos = 25;
for (const category of Object.keys(categoryPositions)) {
const height = Math.ceil(categorizedEmoji[category].length / 8) * 24;
categoryPositions[category].top = verticalPos;
verticalPos += height;
categoryPositions[category].bottom = verticalPos;
verticalPos += 24;
}
return {
categoryNames: categoryNames,
categorizedEmoji: categorizedEmoji,
categoryPositions: categoryPositions,
};
};
scrollToCategory(category) {
const container = document.querySelector('.emoji-finder-container .scroll-region-content');
if (this.state.searchValue.length > 0) {
this.setState({ searchValue: '' });
this.setState(this.getStateFromStore, () => {
this.renderCanvas();
container.scrollTop = this.state.categoryPositions[category].top + 16;
});
} else {
container.scrollTop = this.state.categoryPositions[category].top + 16;
}
this.setState({ activeTab: category });
}
findSearchMatches(searchValue) {
// TODO: Find matches for aliases, too.
const searchMatches = [];
for (const category of Object.keys(categorizedEmojiList)) {
categorizedEmojiList[category].forEach(emojiName => {
if (emojiName.indexOf(searchValue) !== -1) {
searchMatches.push(emojiName);
}
});
}
return searchMatches;
}
calcPosition(event) {
const rect = event.target.getBoundingClientRect();
const position = {
x: event.pageX - rect.left / 2,
y: event.pageY - rect.top / 2,
};
return position;
}
calcEmojiByPosition = position => {
for (const category of Object.keys(this.state.categoryPositions)) {
const LEFT_BOUNDARY = 8;
const RIGHT_BOUNDARY = 204;
const EMOJI_WIDTH = 24.5;
const EMOJI_HEIGHT = 24;
const EMOJI_PER_ROW = 8;
if (
position.x >= LEFT_BOUNDARY &&
position.x <= RIGHT_BOUNDARY &&
position.y >= this.state.categoryPositions[category].top &&
position.y <= this.state.categoryPositions[category].bottom
) {
const x = Math.round((position.x + 5) / EMOJI_WIDTH);
const y = Math.round(
(position.y - this.state.categoryPositions[category].top + 10) / EMOJI_HEIGHT
);
const index = x + (y - 1) * EMOJI_PER_ROW - 1;
return this.state.categorizedEmoji[category][index];
}
}
return null;
};
renderTabs() {
const tabs = [];
this.state.categoryNames.forEach(category => {
let className = `emoji-tab ${category.replace(/ /g, '-').toLowerCase()}`;
if (category === this.state.activeTab) {
className += ' active';
}
tabs.push(
<div key={`${category} container`} style={{ flex: 1 }}>
<RetinaImg
key={`${category} tab`}
className={className}
name={`icon-emojipicker-${category.replace(/ /g, '-').toLowerCase()}.png`}
mode={RetinaImg.Mode.ContentIsMask}
onMouseDown={() => this.scrollToCategory(category)}
/>
</div>
);
});
return tabs;
}
renderCanvas() {
const keys = Object.keys(this.state.categoryPositions);
this._canvasEl.height = this.state.categoryPositions[keys[keys.length - 1]].bottom * 2;
const ctx = this._canvasEl.getContext('2d');
ctx.font = '24px Nylas-Pro';
ctx.fillStyle = 'rgba(0, 0, 0, 0.5)';
ctx.clearRect(0, 0, this._canvasEl.width, this._canvasEl.height);
const position = {
x: 15,
y: 45,
};
let idx = 0;
const categoryNames = Object.keys(this.state.categorizedEmoji);
const renderNextCategory = () => {
if (!categoryNames[idx]) return;
if (!this._mounted) return;
this.renderCategory(categoryNames[idx], idx, ctx, position, renderNextCategory);
idx += 1;
};
renderNextCategory();
}
renderCategory(category, i, ctx, pos, callback) {
const position = pos;
if (i > 0) {
position.x = 18;
position.y += 48;
}
ctx.fillText(category, position.x, position.y);
position.x = 18;
position.y += 48;
const emojiNames = this.state.categorizedEmoji[category];
if (!emojiNames || emojiNames.length === 0) return;
const emojiToDraw = emojiNames.map((emojiName, j) => {
const x = position.x;
const y = position.y;
const src = EmojiStore.getImagePath(emojiName);
if (position.x > 325 && j < this.state.categorizedEmoji[category].length - 1) {
position.x = 18;
position.y += 48;
} else {
position.x += 50;
}
return { src, x, y };
});
const drawEmojiAt = ({ src, x, y } = {}) => {
if (!src) {
return;
}
this._emojiPreloadImage.onload = () => {
this._emojiPreloadImage.onload = null;
ctx.drawImage(this._emojiPreloadImage, x, y - 30, 32, 32);
if (emojiToDraw.length === 0) {
callback();
} else {
drawEmojiAt(emojiToDraw.shift());
}
};
this._emojiPreloadImage.src = src;
};
drawEmojiAt(emojiToDraw.shift());
}
render() {
return (
<div className="emoji-button-popover" tabIndex="-1">
<div className="emoji-tabs">{this.renderTabs()}</div>
<ScrollRegion className="emoji-finder-container" onScroll={this.onScroll}>
<div className="emoji-search-container">
<input
type="text"
className="search"
value={this.state.searchValue}
onChange={this.onChange}
/>
</div>
<canvas
ref={el => {
this._canvasEl = el;
}}
width="400"
height="2000"
onMouseDown={this.onMouseDown}
onMouseOut={this.onMouseOut}
onMouseMove={this.onHover}
style={{ zoom: '0.5' }}
/>
</ScrollRegion>
<div className="emoji-name">{this.state.emojiName}</div>
</div>
);
}
}
export default EmojiButtonPopover;