txtjs: refactor, add annotations
This commit is contained in:
parent
335eac0f6b
commit
526754ba37
524
txt.js/txt.js
524
txt.js/txt.js
|
|
@ -1,60 +1,470 @@
|
|||
this.txtjs = {};
|
||||
let txtjs = {}
|
||||
|
||||
txtjs.open = function(url) {
|
||||
Ox.load(function() {
|
||||
Ox.get(url, function(text) {
|
||||
var $body = Ox.$('body')
|
||||
.css({
|
||||
backgroundColor: 'rgb(255, 255, 255)',
|
||||
overflowX: 'hidden'
|
||||
}),
|
||||
$text = Ox.$('<div>')
|
||||
.css({
|
||||
padding: '10% 20% 10% 10%',
|
||||
fontFamily: 'Georgia, Palatino, DejaVu Serif, Book Antiqua, Palatino Linotype, Times New Roman, serif',
|
||||
fontSize: '20px',
|
||||
lineHeight: '30px'
|
||||
})
|
||||
.appendTo($body),
|
||||
$scroll = Ox.$('<div>')
|
||||
.css({
|
||||
position: 'fixed',
|
||||
right: '24px',
|
||||
top: '16px',
|
||||
width: '7%',
|
||||
bottom: '16px',
|
||||
overflow: 'hidden'
|
||||
})
|
||||
.appendTo($body),
|
||||
$scrollText = Ox.$('<div>')
|
||||
.css({
|
||||
fontSize: '2px',
|
||||
lineHeight: '3px',
|
||||
cursor: 'pointer',
|
||||
WebkitUserSelect: 'none'
|
||||
})
|
||||
.on({
|
||||
mousedown: function(e) {
|
||||
var offset = 'offsetY' in e ? e.offsetY : e.layerY;
|
||||
document.documentElement.scrollTop = offset / factor + margin - 16;
|
||||
}
|
||||
})
|
||||
.appendTo($scroll),
|
||||
factor, margin;
|
||||
text = Ox.encodeHTMLEntities(text)
|
||||
.replace(/\r\n/g, '\n')
|
||||
.replace(/[\r\n]/g, '<br>');
|
||||
$text.html(text);
|
||||
$scrollText.html(text);
|
||||
window.onresize = function() {
|
||||
margin = $text.width() * 0.1;
|
||||
factor = $scrollText[0].clientHeight / $text[0].clientHeight;
|
||||
};
|
||||
window.onscroll = function() {
|
||||
$scroll[0].scrollTop = (window.pageYOffset - margin + 16) * factor;
|
||||
};
|
||||
window.onresize();
|
||||
});
|
||||
});
|
||||
};
|
||||
fetch(url).then(function(response) {
|
||||
return response.text()
|
||||
}).then(txtjs.renderText)
|
||||
}
|
||||
|
||||
txtjs.mark = function(notes) {
|
||||
notes.forEach(function(note) {
|
||||
if (!txtjs.notes.includes(note)) {
|
||||
txtjs.notes.push(note)
|
||||
}
|
||||
txtjs.renderNote(note)
|
||||
})
|
||||
}
|
||||
|
||||
txtjs.notes = []
|
||||
|
||||
;(function() {
|
||||
let listener = addEventListener || attachEvent
|
||||
let event = addEventListener ? 'message' : 'onmessage'
|
||||
listener(event, function(e) {
|
||||
let message = JSON.parse(e.message || e.data)
|
||||
txtjs.onMessage(message.action, message.data)
|
||||
})
|
||||
}())
|
||||
|
||||
txtjs.addNoteFromSelection = function() {
|
||||
let note = txtjs.getNoteFromSelection()
|
||||
if (!note || txtjs.noteExists(note)) {
|
||||
return
|
||||
}
|
||||
txtjs.renderNote(note)
|
||||
txtjs.notes.push(note)
|
||||
txtjs.selectNote(note.id)
|
||||
getSelection().removeAllRanges()
|
||||
txtjs.postMessage('addNote', note)
|
||||
}
|
||||
|
||||
txtjs.cancelEdit = function() {
|
||||
let editing = document.querySelector('g.editing')
|
||||
editing && editing.classList.remove('editing')
|
||||
}
|
||||
|
||||
txtjs.createSVGElement = function(name) {
|
||||
return document.createElementNS('http://www.w3.org/2000/svg', name)
|
||||
}
|
||||
|
||||
txtjs.editNote = function() {
|
||||
let editing = document.querySelector('g.editing')
|
||||
let note = txtjs.getNoteFromSelection()
|
||||
if (!editing || !note) {
|
||||
return
|
||||
}
|
||||
let id = txtjs.getNoteId(editing)
|
||||
note = Object.assign(Ox.getObjectById(txtjs.notes, id), {
|
||||
position: note.position,
|
||||
text: note.text
|
||||
})
|
||||
document.querySelector('svg').removeChild(editing)
|
||||
txtjs.renderNote(note)
|
||||
txtjs.selectNote(note.id)
|
||||
txtjs.postMessage('editNote', {
|
||||
id: id,
|
||||
position: note.position,
|
||||
text: note.text
|
||||
})
|
||||
}
|
||||
|
||||
txtjs.getNewId = function() {
|
||||
let ids = txtjs.notes.map(function(note) {
|
||||
return note.id
|
||||
})
|
||||
let i = 1
|
||||
while (ids.includes(Ox.encodeBase26(i))) {
|
||||
i++
|
||||
}
|
||||
return Ox.encodeBase26(i)
|
||||
}
|
||||
|
||||
txtjs.getNoteId = function(element) {
|
||||
let classNames = Array.from(element.classList).filter(function(className) {
|
||||
return className.startsWith('note-')
|
||||
})
|
||||
if (classNames.length == 0) {
|
||||
return
|
||||
}
|
||||
return classNames[0].substr(5)
|
||||
}
|
||||
|
||||
txtjs.getNoteFromSelection = function() {
|
||||
let selection = getSelection()
|
||||
try {
|
||||
var range = selection.getRangeAt(0)
|
||||
} catch(e) {
|
||||
return
|
||||
}
|
||||
if (range.collapsed) {
|
||||
return
|
||||
}
|
||||
let container = range.commonAncestorContainer
|
||||
if (container.id != 'txt') {
|
||||
while (container != document.body) {
|
||||
container = container.parentElement
|
||||
if (container.id == 'txt') {
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
if (container.id != 'txt') {
|
||||
return
|
||||
}
|
||||
let position = txtjs.getPosition(range)
|
||||
let pos = position.split(':').map(function(v) {
|
||||
return parseInt(v)
|
||||
})
|
||||
let note = {
|
||||
id: txtjs.getNewId(),
|
||||
position: position,
|
||||
text: txtjs.text.substr(pos[0], pos[1] - pos[0]),
|
||||
editable: true
|
||||
}
|
||||
if (txtjs.noteExists(note)) {
|
||||
return
|
||||
}
|
||||
return note
|
||||
}
|
||||
|
||||
txtjs.getPosition = function(range) {
|
||||
let container = document.querySelector('#txt')
|
||||
let nodes = Array.from(container.childNodes)
|
||||
let startNodeIndex = nodes.indexOf(range.startContainer)
|
||||
let endNodeIndex = nodes.indexOf(range.endContainer)
|
||||
let index = 0
|
||||
let start = 0
|
||||
let end = 0
|
||||
for (let i = 0; i <= endNodeIndex; i++) {
|
||||
if (i == startNodeIndex) {
|
||||
start = index + range.startOffset
|
||||
}
|
||||
if (i == endNodeIndex) {
|
||||
end = index + range.endOffset
|
||||
}
|
||||
if (nodes[i].nodeType == 1) { // <br>
|
||||
index++
|
||||
} else {
|
||||
index += nodes[i].textContent.length
|
||||
}
|
||||
}
|
||||
return start + ':' + end
|
||||
}
|
||||
|
||||
txtjs.getRange = function(id, start, end) {
|
||||
let startContainer, startOffset, endContainer, endOffset
|
||||
let container = document.querySelector('#' + id)
|
||||
let nodes = Array.from(container.childNodes)
|
||||
let index = 0
|
||||
for (let i = 0; i < nodes.length; i++) {
|
||||
if (start < index + nodes[i].textContent.length && startOffset === void 0) {
|
||||
startContainer = nodes[i]
|
||||
startOffset = start - index
|
||||
}
|
||||
if (end <= index + nodes[i].textContent.length) {
|
||||
endContainer = nodes[i]
|
||||
endOffset = end - index
|
||||
break
|
||||
}
|
||||
if (nodes[i].nodeType == 1) { // <br>
|
||||
index++
|
||||
} else {
|
||||
index += nodes[i].textContent.length
|
||||
}
|
||||
}
|
||||
let range = document.createRange()
|
||||
range.setStart(startContainer, startOffset)
|
||||
range.setEnd(endContainer, endOffset)
|
||||
return range
|
||||
}
|
||||
|
||||
txtjs.getSelectedNote = function() {
|
||||
let elements = Array.from(document.querySelectorAll('g.selected'))
|
||||
if (elements.length == 0) {
|
||||
return
|
||||
}
|
||||
let id = txtjs.getNoteId(elements[0])
|
||||
return Object.assign(Ox.getObjectById(txtjs.notes, id), {
|
||||
elements: elements
|
||||
})
|
||||
}
|
||||
|
||||
txtjs.moveNote = function() {
|
||||
let selected = txtjs.getSelectedNote()
|
||||
if (!selected || !selected.elements[0].classList.contains('editable')) {
|
||||
return
|
||||
}
|
||||
selected.elements.forEach(function(element) {
|
||||
element.classList.add('editing')
|
||||
})
|
||||
}
|
||||
|
||||
txtjs.noteExists = function(note) {
|
||||
return txtjs.notes.some(function(note_) {
|
||||
return note_.position == note.position
|
||||
})
|
||||
}
|
||||
|
||||
txtjs.onMessage = function(action, data) {
|
||||
|
||||
}
|
||||
|
||||
txtjs.postMessage = function(action, data) {
|
||||
console.log('postMessage', action, data)
|
||||
parent.postMessage(JSON.stringify({action: action, data: data}), '*')
|
||||
}
|
||||
|
||||
txtjs.removeNote = function() {
|
||||
let selected = txtjs.getSelectedNote()
|
||||
if (!selected) {
|
||||
return
|
||||
}
|
||||
let id = txtjs.getNoteId(selected.elements[0])
|
||||
selected.elements.forEach(function(element) {
|
||||
element.parentElement.removeChild(element)
|
||||
})
|
||||
let index = txtjs.notes.map(function(note) {
|
||||
return note.id
|
||||
}).indexOf(id)
|
||||
txtjs.notes.splice(index, 1)
|
||||
txtjs.postMessage('removeNote', {
|
||||
id: id
|
||||
})
|
||||
}
|
||||
|
||||
txtjs.renderNote = function(note) {
|
||||
let pos = note.position.split(':').map(function(v) {
|
||||
return parseInt(v)
|
||||
})
|
||||
let ids = ['txt', 'txt-scroll']
|
||||
ids.forEach(function(id) {
|
||||
let range = txtjs.getRange(id, pos[0], pos[1])
|
||||
let rects = Array.from(range.getClientRects())
|
||||
let size = rects.reduce(function(width, rect) {
|
||||
return width + rect.width
|
||||
}, 0)
|
||||
let maxHeight = 8192
|
||||
let firstIndex = Math.floor((rects[0].top + window.pageYOffset) / maxHeight)
|
||||
let lastIndex = Math.floor((rects[rects.length - 1].top + window.pageYOffset + rects[rects.length - 1].height) / maxHeight)
|
||||
for (let index = firstIndex; index <= lastIndex; index++) {
|
||||
let g = txtjs.createSVGElement('g')
|
||||
g.classList.add('note-' + note.id)
|
||||
g.classList.add('selectable')
|
||||
if (note.editable) {
|
||||
g.classList.add('editable')
|
||||
}
|
||||
g.setAttribute('data-size', size)
|
||||
g.setAttribute('pointer-events', id == 'txt' ? 'all' : 'none')
|
||||
rects.forEach(function(rect) {
|
||||
let element = txtjs.createSVGElement('rect')
|
||||
let x = id == 'txt' ? rect.left
|
||||
: rect.left - document.querySelector('#scroll').getBoundingClientRect().left + 8
|
||||
let y = id == 'txt' ? rect.top + window.pageYOffset - index * maxHeight
|
||||
: rect.top + document.querySelector('#scroll').scrollTop - 16 - index * maxHeight
|
||||
element.setAttribute('x', x)
|
||||
element.setAttribute('y', y)
|
||||
element.setAttribute('width', rect.width)
|
||||
element.setAttribute('height', rect.height)
|
||||
g.appendChild(element)
|
||||
})
|
||||
let svg = document.querySelector('svg#svg-' + id + '-' + index)
|
||||
for (let i = 0; i < svg.children.length; i++) {
|
||||
let childSize = parseInt(svg.children[i].getAttribute('data-size'))
|
||||
if (size > childSize) {
|
||||
svg.insertBefore(g, svg.children[i])
|
||||
break
|
||||
}
|
||||
}
|
||||
if (!g.parentElement) {
|
||||
svg.appendChild(g)
|
||||
}
|
||||
}
|
||||
})
|
||||
}
|
||||
|
||||
txtjs.renderSVG = function(id, index, width, height) {
|
||||
function mousedown(e) {
|
||||
svg.addEventListener('mouseup', mouseup)
|
||||
timeout = setTimeout(function() {
|
||||
svg.removeEventListener('mouseup', mouseup)
|
||||
e.target.classList.remove('selectable')
|
||||
e.target.setAttribute('pointer-events', 'none')
|
||||
document.addEventListener('mouseup', function() {
|
||||
e.target.classList.add('selectable')
|
||||
e.target.setAttribute('pointer-events', 'all')
|
||||
})
|
||||
}, 250)
|
||||
}
|
||||
function mouseup(e) {
|
||||
clearTimeout(timeout)
|
||||
txtjs.selectNote(txtjs.getNoteId(e.target.parentElement))
|
||||
}
|
||||
let timeout
|
||||
let svg = txtjs.createSVGElement('svg')
|
||||
svg.setAttribute('id', 'svg-' + id + '-' + index)
|
||||
svg.setAttribute('pointer-events', 'none')
|
||||
if (id == 'txt') {
|
||||
svg.style.left = 0
|
||||
} else {
|
||||
svg.style.right = '8px'
|
||||
}
|
||||
svg.style.top = index * 8192 + 'px'
|
||||
svg.style.width = width + 'px'
|
||||
svg.style.height = height + 'px'
|
||||
if (id == 'txt') {
|
||||
svg.addEventListener('mousedown', mousedown)
|
||||
}
|
||||
let parentElement = id == 'txt' ? document.body : document.querySelector('#scroll')
|
||||
parentElement.appendChild(svg)
|
||||
}
|
||||
|
||||
txtjs.renderSVGs = function() {
|
||||
let maxHeight = 8192
|
||||
let ids = ['txt', 'txt-scroll']
|
||||
ids.forEach(function(id) {
|
||||
let rect = document.querySelector('#' + id).getBoundingClientRect()
|
||||
let lastHeight = rect.height % maxHeight
|
||||
let n = Math.ceil(rect.height / maxHeight)
|
||||
for (let i = 0; i < n; i++) {
|
||||
txtjs.renderSVG(id, i, rect.width, i < n - 1 ? maxHeight : lastHeight)
|
||||
}
|
||||
})
|
||||
}
|
||||
|
||||
txtjs.renderText = function(text) {
|
||||
txtjs.text = text
|
||||
html = text.replace(/</g, '<').replace(/>/g, '>')
|
||||
html = html.replace().replace(/\r\n/g, '\n').replace(/[\r\n]/g, '<br>')
|
||||
txtjs.html = Ox.encodeHTMLEntities(text).replace(/\r\n/g, '\n').replace(/[\r\n]/g, '<br>')
|
||||
window.addEventListener('resize', onResize)
|
||||
window.addEventListener('resizeend', onResizeend)
|
||||
window.addEventListener('scroll', onScroll)
|
||||
document.addEventListener('keydown', function(e) {
|
||||
console.log(e.keyCode)
|
||||
if (e.keyCode == 13) { // ENTER
|
||||
txtjs.editNote()
|
||||
} else if (e.keyCode == 27) { // ESCAPE
|
||||
txtjs.selectNote(null)
|
||||
txtjs.cancelEdit()
|
||||
} else if (e.keyCode == 37) { // LEFT
|
||||
txtjs.selectNextNote(-1)
|
||||
} else if (e.keyCode == 39) { // RIGHT
|
||||
txtjs.selectNextNote(1)
|
||||
} else if (e.keyCode == 46) { // DELETE
|
||||
txtjs.removeNote()
|
||||
} else if (e.keyCode == 77) { // M
|
||||
txtjs.moveNote()
|
||||
} else if (e.keyCode == 78) { // N
|
||||
txtjs.addNoteFromSelection()
|
||||
}
|
||||
})
|
||||
let style = document.createElement('style')
|
||||
style.innerText = [
|
||||
'svg { mix-blend-mode: multiply; position: absolute }',
|
||||
'g { fill: rgb(255, 255, 192); fill-opacity: 0.5 }',
|
||||
'g.selectable { cursor: pointer }',
|
||||
'g.editable { fill: rgb(255, 255, 0) }',
|
||||
'g.selected { fill: rgb(224, 240, 255) }',
|
||||
'g.editable.selected { fill: rgb(128, 192, 255) }',
|
||||
'g.editable.editing { fill: rgb(128, 255, 128) }',
|
||||
'::selection { background: rgb(192, 192, 192) }'
|
||||
].join('\n')
|
||||
document.head.appendChild(style)
|
||||
document.body.style.backgroundColor = 'rgb(255, 255, 255)'
|
||||
document.body.style.margin = 0
|
||||
document.body.style.overflowX = 'hidden'
|
||||
let textElement = document.createElement('div')
|
||||
textElement.id = 'txt'
|
||||
textElement.style.fontFamily = 'Georgia, Palatino, DejaVu Serif, Book Antiqua, Palatino Linotype, Times New Roman, serif',
|
||||
textElement.style.fontSize = '20px'
|
||||
textElement.style.lineHeight = '30px'
|
||||
textElement.style.padding = '10% 20% 10% 10%'
|
||||
textElement.innerHTML = txtjs.html
|
||||
textElement.addEventListener('mousedown', function() {
|
||||
txtjs.selectNote(null)
|
||||
})
|
||||
document.body.appendChild(textElement)
|
||||
let scrollElement = document.createElement('div')
|
||||
scrollElement.id = 'scroll'
|
||||
scrollElement.style.bottom = '16px'
|
||||
scrollElement.style.overflow = 'hidden'
|
||||
scrollElement.style.position = 'fixed'
|
||||
scrollElement.style.right = '24px'
|
||||
scrollElement.style.width = '7%'
|
||||
scrollElement.style.top = '16px'
|
||||
document.body.appendChild(scrollElement)
|
||||
let scrollTextElement = document.createElement('div')
|
||||
scrollTextElement.id = 'txt-scroll'
|
||||
scrollTextElement.style.cursor = 'pointer'
|
||||
scrollTextElement.style.fontFamily = 'Georgia, Palatino, DejaVu Serif, Book Antiqua, Palatino Linotype, Times New Roman, serif',
|
||||
scrollTextElement.style.fontSize = '2px'
|
||||
scrollTextElement.style.lineHeight = '3px'
|
||||
scrollTextElement.style.MozUserSelect = 'none'
|
||||
scrollTextElement.style.WebkitUserSelect = 'none'
|
||||
scrollTextElement.innerHTML = txtjs.html
|
||||
scrollTextElement.addEventListener('mousedown', function(e) {
|
||||
let offset = 'offsetY' in e ? e.offsetY : e.layerY
|
||||
document.documentElement.scrollTop = offset / factor + margin - 16
|
||||
})
|
||||
scrollElement.appendChild(scrollTextElement)
|
||||
txtjs.renderSVGs()
|
||||
let factor, margin
|
||||
onResize()
|
||||
function onResize() {
|
||||
factor = scrollTextElement.clientHeight / textElement.clientHeight
|
||||
margin = textElement.offsetWidth * 0.1
|
||||
setTimeout(function() {
|
||||
Array.from(document.querySelectorAll('svg')).forEach(function(svg) {
|
||||
svg.parentElement.removeChild(svg)
|
||||
})
|
||||
txtjs.renderSVGs()
|
||||
txtjs.mark(txtjs.notes)
|
||||
})
|
||||
}
|
||||
function onResizeend() {
|
||||
|
||||
}
|
||||
function onScroll() {
|
||||
scrollElement.scrollTop = (window.pageYOffset - margin + 16) * factor
|
||||
}
|
||||
txtjs.mark([{id: 'A', position: '417:468', editable: false}])
|
||||
}
|
||||
|
||||
txtjs.selectNextNote = function(direction) {
|
||||
let selected = txtjs.getSelectedNote()
|
||||
if (!selected) {
|
||||
return
|
||||
}
|
||||
let id = txtjs.getNoteId(selected.elements[0])
|
||||
let ids = txtjs.notes.sort(function(a, b) {
|
||||
return parseInt(a.position.split()[0]) - parseInt(b.position.split()[0])
|
||||
}).map(function(note) {
|
||||
return note.id
|
||||
})
|
||||
txtjs.selectNote(ids[Ox.mod(ids.indexOf(id) + direction, ids.length)])
|
||||
}
|
||||
|
||||
txtjs.selectNote = function(id) {
|
||||
let selected = txtjs.getSelectedNote()
|
||||
if (selected) {
|
||||
selected.elements.forEach(function(element) {
|
||||
element.classList.remove('selected')
|
||||
})
|
||||
}
|
||||
if (id) {
|
||||
let editing = Array.from(document.querySelectorAll('g.editing'))
|
||||
if (editing.length && txtjs.getNoteId(editing) != id) {
|
||||
editing.forEach(function(element) {
|
||||
element.classList.remove('editing')
|
||||
})
|
||||
}
|
||||
let elements = Array.from(document.querySelectorAll('g.note-' + id))
|
||||
elements.forEach(function(element) {
|
||||
element.classList.add('selected')
|
||||
})
|
||||
// FIXME: SCROLL
|
||||
// elements[0].scrollIntoView()
|
||||
// window.scrollTo(0, elements[0].offsetTop)
|
||||
}
|
||||
txtjs.postMessage('selectNote', {id: id})
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue