f.weber/homebrewery
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Add live scrolling to keep the preview in sync with editor position.

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This catchs CTRL-HOME, CTRL-END, and mouseclicks.

It tests for changes on arrow keys and enter.

Not sure if it's the best way to do this, but it works quickly on a large, crappy brew.
This commit is contained in:
David Bolack
2024-05-18 01:44:42 -05:00
parent 9b0db15083
commit 8ece54701d
1 changed files with 48 additions and 1 deletions
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49
client/homebrew/editor/editor.jsx
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@@ -22,6 +22,18 @@ const DEFAULT_STYLE_TEXT = dedent`
color: black;
}`;
let lastPage = 0;
let liveScroll = true;
const isElementCodeMirror=(element)=>{
let el = element;
while( el.tagName != 'body' ) {
if( el.classList.contains('CodeMirror-code') || el.classList.contains('CodeMirror-line'))
return true;
el = el.parentNode;
}
return false;
};
const Editor = createClass({
displayName : 'Editor',
@@ -57,6 +69,15 @@ const Editor = createClass({
this.highlightCustomMarkdown();
window.addEventListener('resize', this.updateEditorSize);
document.addEventListener('keydown', this.handleControlKeys);
document.addEventListener('click', (e)=>{
if(isElementCodeMirror(e.target) && liveScroll ) {
const curPage = this.getCurrentPage();
if( curPage != lastPage ) {
this.brewJump();
lastPage = curPage;
}
}
});
const editorTheme = window.localStorage.getItem(EDITOR_THEME_KEY);
if(editorTheme) {
@@ -81,10 +102,36 @@ const Editor = createClass({
},
handleControlKeys : function(e){
if(liveScroll) {
const movementKeys = [ 13, 33, 34, 37, 38, 39, 40 ];
if (movementKeys.includes(e.keyCode)) {
const curPage = this.getCurrentPage();
if( curPage != lastPage ) {
this.brewJump();
lastPage = curPage;
}
}
}
if(!(e.ctrlKey || e.metaKey)) return;
const J_KEY = 74;
const END_KEY = 35;
const HOME_KEY = 36;
// Handle CTRL-HOME and CTRL-END
if(((e.keyCode == END_KEY) || (e.keyCode == HOME_KEY)) && liveScroll) this.brewJump();
// Brew Jump on CTRL-J
if((!e.shiftKey) && (e.keyCode == J_KEY)) this.brewJump();
if (e.shiftKey && (e.keyCode == J_KEY)) this.sourceJump();
// Source Jump on Shift-CTRL-J
if ((e.shiftKey) && (!e.altKey) && (e.keyCode == J_KEY)) this.sourceJump();
// Toggle Live-scrolling on Shift-CTRL-ALT-J
if((e.shiftKey) && (e.altKey) && (e.keyCode == J_KEY)) {
console.log('Trying to flip the property?')
console.log(liveScroll);
liveScroll = !liveScroll;
console.log(liveScroll);
}
if( e.keyCode == J_KEY) {
e.stopPropagation();
e.preventDefault();