Text editor is coming along nicely. Made an article for eventually recording my exploits.
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articles/text_editors_with_contenteditable.article.html
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articles/text_editors_with_contenteditable.article.html
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<article>
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<p>I've been playing with an exciting feature of HTML5 that I hadn't heard of: the <code class="language-html">contentEditable</code> attribute. It's magical! It just makes anything suddenly be editable in-browser! It also finally provides me with the thing I've been wanting ever since growing dissatisfied with text editors: A way to build a <em>new</em> text editor, <em>without</em> having to actually code up the guts of text movement, manipulation, and entry. Oh, happy day!</p>
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<p>More on this as the situation progresses.</p>
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</article>
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articles/text_editors_with_contenteditable.template.html
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articles/text_editors_with_contenteditable.template.html
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{% extends "articles/article.template.html" %}
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{% block title -%}
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contentEditable: Text Editors Made Easy?
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{%- endblock %}
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{% block body -%}
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{%- include "articles/text_editors_with_contenteditable.article.html" -%}
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{%- endblock %}
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@ -13,7 +13,6 @@
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margin: 0;
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}
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.block {
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white-space: pre-line;
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font-family: monospace;
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background-color: white;
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padding: 4px;
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@ -41,33 +40,7 @@ When I see the text "if (something)", then I should make a new if block.
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["block", "block if"] => ["block", "block if"]
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<script type="text/javascript">
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finds_if_regex = /(?:^|\s+)(if\s*\([^)]+\)\s*)({[^}]*})/
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function make_new_if(text_area) {
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if (text_area.is('.block.base')) {
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var contents = text_area.html();
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var split_up = contents.split(finds_if_regex);
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var new_blocks = [];
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new_blocks.append($('<div></div>').append(split_up[0]).addClass('block base'));
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for (var i=1; i<split_up.length; i+=3) {
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var if_container = $('<div></div>').addClass('block if');
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var branch_container = $('<div></div>').addClass('branch if');
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var conditional = $('<div></div>').addClass('condition').html(split_up[i]);
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var result = $('<div></div>').addClass('block base').html(split_up[i+1]);
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branch_container.append(conditional);
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branch_container.append(result);
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if_container.append(branch_container);
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new_blocks.append(if_container);
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if (split_up[i+2] != '') {
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var post_if = $('<div></div>').addClass('block base').html(split_up[i+2]);
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new_blocks.append(post_if);
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}
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}
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}
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}
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function make_new_else(text_area) {
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}
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</script>
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<style type="text/css">
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.block {display: block;}
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@ -76,8 +49,8 @@ function make_new_else(text_area) {
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</style>
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<div class="block" id="editor" contentEditable>
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<div class="block base" >
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some kind of preparation code, I guess
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or something
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some kind of preparation code, I guess<br>
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or something<br>
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</div>
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<div class="block if">
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<div class="branch if">
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@ -94,16 +67,16 @@ function make_new_else(text_area) {
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</div>
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</div>
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<div class="block base">
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some code
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do other thing
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{} | : {} ();
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some code<br>
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do other thing<br>
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{} | : {} ();<br>
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</div>
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<div class="block while">
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<div class="condition">while (something)</div>
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<div class="block base">
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update the counters
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hack the gibsons
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do the stuff
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update the counters<br>
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hack the gibsons<br>
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do the stuff<br>
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</div>
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</div>
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</div>
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@ -121,68 +94,58 @@ function make_new_else(text_area) {
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<script type="text/javascript">
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// Finds an if block, breaking text up around it into useful subblocks.
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function separate_if_blocks (text_area) {
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contents = $(text_area).val();
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search = /([\s\S]*)(if\s*\([^)]+\)\s*)({[^}]*})(\s*else\s*)({[^}]*})([\s\S]*)/.exec(contents);
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if (search) {
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return {
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'found': true,
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'before': search[1],
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'the_if': search[2],
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'true_block': search[3],
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'the_else': search[4],
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'false_block': search[5],
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'after': search[6],
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};
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} else {
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return {'found': false,};
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var finds_if_regex = /(?:^|\s+)(if\s*\([^)]+\)\s*)(\{[^}]*\})/
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function make_new_if(c1, c2) {
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var thingeroo;
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if (c1 == undefined) { thingeroo = $(this); }
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if (c2 == undefined) { thingeroo = $(c1); }
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else { thingeroo = $(c2); }
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if (!thingeroo.is('.block.base')) {
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thingeroo.find('.block.base').each(make_new_if);
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} else if (finds_if_regex.exec(thingeroo.html())) {
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var contents = thingeroo.html();
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var split_up = contents.split(finds_if_regex);
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var new_blocks = [];
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new_blocks.push($('<div></div>').append(split_up[0]).addClass('block base'));
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for (var i=1; i<split_up.length; i+=3) {
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var if_container = $('<div></div>').addClass('block if');
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var branch_container = $('<div></div>').addClass('branch if');
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var conditional = $('<div></div>').addClass('condition').html(split_up[i]);
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var result = $('<div></div>').addClass('block base').html(split_up[i+1]);
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branch_container.append(conditional);
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branch_container.append(result);
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if_container.append(branch_container);
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new_blocks.push(if_container);
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if (split_up[i+2] != '') {
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var post_if = $('<div></div>').addClass('block base').html(split_up[i+2]);
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new_blocks.push(post_if);
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}
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}
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thingeroo.after(new_blocks);
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console.log(new_blocks);
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thingeroo.remove();
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}
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}
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function textarea_change_listener(event) {
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var text_area = $(event.target);
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function make_new_else(container) {
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format_block(text_area.parents('.block'), into=$('#output'));
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var s = separate_if_blocks(text_area);
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console.log(s);
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if (s.found) {
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var block = text_area.parent('.block')
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var before = $('<textarea>' + s.before + '</textarea>');
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var true_block = $('<div class="block true" />').append(
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$('<textarea>' + s.the_if + '</textarea>').addClass('if-condition')
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).append(
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$('<textarea>' + s.true_block + '</textarea>').addClass('if-code')
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);
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var else_block = $('<div class="block false" />').append(
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$('<textarea>' + s.the_else + '</textarea>').addClass('else-condition')
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).append(
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$('<textarea>' + s.false_block + '</textarea>').addClass('else-code')
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);
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var after = $('<textarea>' + s.after + '</textarea>');
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block.append(before, true_block, else_block, after);
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text_area.remove();
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}
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}
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function format_block (from, into) {
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if (from.length > 1) { return; }
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contents = '';
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from.find('textarea,.block').each(function (index, element) {
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if ($(element).is('textarea')) {
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contents += $(element).val();
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} else {
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contents += format_block($(element));
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}
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var collapsible_block_selector = '.block.base';
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var cbs = collapsible_block_selector;
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function collapse_neighbors(container) {
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container = $(container);
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container.find('.block.base + .block.base').each(function () {
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var base = $(this).prev('.block.base');
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var target = $(this);
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var new_base_contents = base.html() + '<br>' + target.html();
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base.html(new_base_contents);
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target.remove();
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});
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if (into == undefined) {
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return contents;
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} else {
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into.html(contents);
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}
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}
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$(document).ready(function () {
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$('#editor').on('input', '.block.base', make_new_if);
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$('#editor').on('input', function() { make_new_if($(this)); });
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$('#editor').on('input', function() { collapse_neighbors($(this)); });
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});
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</script>
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</body>
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