tweaking...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
This commit is contained in:
Alex A. Naanou 2023-09-26 14:50:42 +03:00
parent 92a3196002
commit 2172b83e93

View File

@ -13,6 +13,8 @@
.editor div span {
display: block;
padding: 0.2em;
white-space: pre;
}
.editor div[collapsed] {
@ -33,14 +35,14 @@
</style>
<script>
var getFocused = function(offset=0){
var focused = document.querySelector('.editor :focus')
var getFocused = function(offset=0, selector='[tabindex]'){
var focused = document.querySelector(`.editor ${selector}:focus`)
if(offset == 0){
return focused }
if(offset == 'parent'){
if(!focused){
return document.querySelector('.editor [tabindex]') }
return document.querySelector(`.editor ${selector}`) }
var elem = focused.parentElement
return elem.classList.contains('editor') ?
undefined
@ -48,7 +50,7 @@ var getFocused = function(offset=0){
if(offset == 'child'){
if(!focused){
return document.querySelector('.editor [tabindex]') }
return document.querySelector(`.editor ${selector}`) }
return focused.querySelector('div') }
if(offset == 'children'){
@ -65,7 +67,7 @@ var getFocused = function(offset=0){
.filter(function(elem){
return elem.getAttribute('tabindex') }) }
var focusable = [...document.querySelectorAll('.editor [tabindex]')]
var focusable = [...document.querySelectorAll(`.editor ${selector}`)]
.filter(function(e){
return e.offsetParent != null })
if(offset == 'all'){
@ -83,6 +85,11 @@ var getFocused = function(offset=0){
} else {
return focusable[offset > 0 ? 0 : focusable.length-1] } }
// XXX would also be nice to make the move only if at first/last line/char
// XXX would be nice to keep the cursor at roughly the same left offset...
var getEditable = function(offset){
return getFocused(offset, '[contenteditable]') }
var indentNode = function(indent=true){
var cur = getFocused()
if(!cur){
@ -108,13 +115,14 @@ var toggleCollapse = function(node, state='next'){
return getFocused('all')
.map(function(node){
return toggleCollapse(node, state) }) }
// state passed directly...
// toggleCollapse(<state>)
if(!(node instanceof HTMLElement) && node != null){
state = node
node = null }
node ??= getFocused()
if(!node){
if(!node
// only nodes with children can be collapsed...
|| !node.querySelector('[tabindex]')){
return }
state = state == 'next' ?
!node.getAttribute('collapsed')
@ -125,18 +133,65 @@ var toggleCollapse = function(node, state='next'){
return node }
// XXX this works only on the current text node...
var atLine = function(index){
// XXX get line
var sel = window.getSelection()
// XXX add support for range...
if(sel.type == 'Caret'){
var text = getEditable().innerText
var lines = text.split(/\n/g).length
var offset = sel.focusOffset
var line = text.slice(0, offset).split(/\n/g).length
console.log('---', line, 'of', lines, '---', offset)
// XXX STUB index handling...
// XXX need to account for multiple elements withn the block...
// ...this breaks if we insert an element into the text,
// e.g. something like <i>..</i>...
if(index == -1 && line == lines){
return true
} else if(index == 0 && line == 1){
return true
}
return false
}
return true
}
var LEFT_COLLAPSE = false
var RIGHT_EXPAND = true
var keyboard = {
// vertical navigation...
ArrowDown: function(evt, offset=1){
getFocused(1)?.focus() },
var action = getFocused
var edited = document.querySelector('.editor [contenteditable]:focus')
if(edited){
if(!atLine(-1)){
return }
evt.preventDefault()
//window.getSelection()
action = getEditable }
action(1)?.focus() },
ArrowUp: function(evt){
getFocused(-1)?.focus() },
var action = getFocused
var edited = document.querySelector('.editor [contenteditable]:focus')
if(edited){
if(!atLine(0)){
return }
evt.preventDefault()
action = getEditable }
if(action === getEditable){
evt.preventDefault() }
action(-1)?.focus() },
// horizontal navigation / collapse...
ArrowLeft: function(evt){
if(document.querySelector('.editor [contenteditable]:focus')){
// XXX if at end of element move to next...
return }
if(LEFT_COLLAPSE){
toggleCollapse(true)
getFocused('parent')?.focus()
@ -145,6 +200,9 @@ var keyboard = {
toggleCollapse(true)
: getFocused('parent')?.focus() } },
ArrowRight: function(evt){
if(document.querySelector('.editor [contenteditable]:focus')){
// XXX if at end of element move to next...
return }
if(RIGHT_EXPAND){
toggleCollapse(false)
var child = getFocused('child')
@ -163,11 +221,11 @@ var keyboard = {
// edit mode...
Enter: function(evt){
console.log('---', evt)
},
evt.shiftKey
|| evt.preventDefault()
getFocused()?.querySelector('[contenteditable]')?.focus() },
Escape: function(evt){
console.log('---', evt)
},
document.querySelector('[contenteditable]:focus')?.parentElement?.focus() },
}
document.addEventListener('keydown',
function(evt){
@ -184,6 +242,7 @@ TODO:
- <s>expand/collapse subtree</s>
- <s>shift subtree up/down</s>
- edit node
- multiple node selection
- create node
- mouse controls
- touch controls
@ -202,19 +261,26 @@ Controls:
<hr>
<div class="editor">
<div tabindex=0><span>root</span>
<div tabindex=0 collapsed><span>A</span>
<div tabindex=0><span>a</span>
<div tabindex=0><span contenteditable="true">root</span>
<div tabindex=0 collapsed><span contenteditable="true">A</span>
<div tabindex=0><span contenteditable="true">a</span>
</div>
<div tabindex=0><span>b</span>
<div tabindex=0><span contenteditable="true">b</span>
</div>
<div tabindex=0><span>c</span>
<div tabindex=0><span contenteditable="true">c</span>
</div>
</div>
<div tabindex=0><span>B</span>
<div tabindex=0><span>d</span>
<div tabindex=0><span contenteditable="true">B</span>
<div tabindex=0><span contenteditable="true">d</span>
</div>
<div tabindex=0><span>e</span>
<div tabindex=0><span contenteditable="true">e</span>
</div>
</div>
<div tabindex=0><span contenteditable="true">C</span>
<div tabindex=0><span contenteditable="true">This is a line of text</span>
</div>
<div tabindex=0><span contenteditable="true">This is a set
text lines</span>
</div>
</div>
</div>