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Diffstat (limited to 'infrastructure/ace/notes.txt')
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diff --git a/infrastructure/ace/notes.txt b/infrastructure/ace/notes.txt new file mode 100644 index 0000000..d9e1fda --- /dev/null +++ b/infrastructure/ace/notes.txt @@ -0,0 +1,195 @@ +XXX This is a scratch file I used for notes; information may be out of date or random -- dgreenspan + +- rename ace2.js to ace.js + + +Editor goals: +- Highlight JavaScript accurately (including regular expression, etc.) +- On large documents (say 2000 lines), be responsive to new input and rehighlight the screen quickly +- Highlight "as you type", not when you're done with the current line +- Propagate multi-line comment highlighting efficiently +- Look and feel as "clean" and "native" as possible to the user +- Support unlimited "undo" with arbitrary undo model +- Allow features such as auto-indentation and parenthesis-flashing to be added easily +- Work in IE 6, FF 2, Safari 3, Camino +- Support native copy and paste, within the buffer and with other programs +- Not display any flickering, blurring, or any kind of artifact +- Support incremental syntax-highlighting of other languages too +- Be extensible -- multiple views of whole document, lines, tokens, characters +- Support native selection behavior, international input, assistive devices (potentially) +- Resizable text +- Unlimited editors per page + + +compatibility, speed, power, generality, + + + + +- enhancement ideas + - show mismatched brackets + - undo history limit + +ace2 changelog for week of 5/9: +- full "undo" support! control-Z (Windows) or command-Z (Mac) +- flashing parentheses are back, and better than before! +- appjet:css sections are syntax-highlighted +- optimizations for slower machines +- fixed various quirks +- lines too long for browser are hard-wrapped on entry + + +== path to calls that change rep +- doLineSplice + - incorporateUserChanges + - idleWorkTimer + - handleKeyEvent + - performDocumentLineSplice + - setCodeText + - importCode + - setup + - handleReturnIndentation + - handleKeyEvent + - performDocumentReplaceRange + - handleKeyEvent + - performDocumentReplaceSelection + - handleKeyEvent +- repSelectionChange + - incorporateUserChanges + - idleWorkTimer + - handleKeyEvent + - performSelectionChange + - setCodeText + - importCode + - setup + - handleReturnIndentation + - handleKeyEvent + - performDocumentReplaceRange + - doLineSplice + + +make ace2_common local? + + +next steps: +- safari scroll jump +- FF 1.6 support +- weird "delete" bug +- speed on slow machines +- paren flashing +- undo + + +- investigate errors with special "delete" handling turned off +- track down FF quirk (delete at begging of line starting with one space) +- (done for now: look for IE memory leaks) + + +Outstanding issues: ++ Bugs: ++ Quirks: + - FF: delete at beginning of line where line starts with 1 space (space briefly disappears) + - IE: clicking below document body clears selection (instead of moving caret) + - IE: horizontal scroll-bar sometimes unnecessary ++ Speed: + - skip-list is slow for insert/delete lines on highlighting + - return at bottom of 3000-line file takes too long to normalize in Firefox (probably worse in IE) ++ feature parity + - regular expression highlighting not smart in lexically ambiguous cases (should use previous token) + - paren flashing ++ additional features + - less zealous IDE document-dirty marking (e.g. arrow-key marks dirty) + - undo ++ fancy todo + - bring back rich shell editor + - use same highlighting for view-source, highlight on server + - highlight CSS and stuff + ++ done + - multi-line strings + - does tab do the right thing? + - indent on return + - quirk: return key doesn't scroll caret into view + - line numbers + - highlight appjet directives + - IE Support + - slightly smarter indentation + - tab deletes until a stop + - interface: import/export + - interface: rich/plain + - bugfix: IE: return, delete, etc. doesn't mark document dirty! + - bugfix: IE: can't copy/paste within document + - caret not always in view after an edit + +==================== + +Highlighting strategy: +- allow incremental dirty-region highlighting, based on time and char to pass +- first lex the viewport, based on information extending a little before it +- then highlight the viewport +- then highlight around the viewport? +- lex the whole document from the top +- highlight lines outside the viewport + + + + + +- deal with key events in relation to when they are responded to (doLater after all?) +- use Pygment! + +- handle international characters (fragile DOM state) +- normalize only when idle (make sure that works) +- better detection, e.g. paste in Safari +- selectionchange event? + +- can eventually allow discarding user changes! + +DONE: +- editing when lines consist of spans +- all browsers: scroll to full left on return, etc +- why does IE let you type without firing events? +- slow in IE? + +tests: +- type some stuff, return, type more stuff, return +- return repeatedly starting at end of line, delete repeatedly +- return repeatedly starting at beginning of line, delete repeatedly +- return repeatedly starting in middle of line, delete repeatedly +- return/delete starting between blank lines +- try to move past end of document, then try to type, then try to move +- from collapsed selection, shift-left repeatedly, across lines, shift-right repeatedly +- from collapsed selection, shift-right repeatedly, across lines, shift-left repeatedly +- shift-up, shift-down; shift-down, shift-up +- cut-and-paste span of characters into middle of line +- cut-and-paste span of characters into blank line (FF) +- cut-and-paste span of characters at end of line (FF) +- cut-and-paste selection with blank lines in it, make sure lines still blank +- cut-and-paste selection starting and ending with blank lines (IE, FF) +- doc with blank lines, select-all, cut, paste +- doc starting and ending in blank lines, select-all, cut, paste (IE, Firefox) + - IE currently loses one blank line at end if > 0 + - Safari loses one blank line at end if > 1 +- non-empty doc, select-all, delete, select-all, delete (IE crash, Safari hidden cursor) +- non-empty doc select-all, return, return, return (IE) +- on last line of document: type stuff, return, type stuff. down arrow goes down = bad (IE) +- on last line of document: type stuff, return, return. should be no extra lines (IE) +- go to start of next-to-last line, shift-down, cut (IE) +- cursor at start of line, shift-down, cut, paste (IE cursor jump) +- cursor at start of one empty line, shift-down, cut, paste (IE) +- cursor at start of two empty lines, shift-down, cut, paste (IE, FF) + - on IE, no new line is pasted; default behavior is worse, so I'll take it + - on FF, the equivalent of two returns; good enough +- cursor at start of two empty lines, shift-down, cut, paste in middle of line (IE, FF) + - in IE, FF, Safari, the equivalent of two returns +- type letter on blank line, delete it (IE) +- type space on blank line, delete it (IE) +- type space before non-blank line, delete it +- delete blank line, then delete again quickly +- delete blank line from caret at start of line starting with one space (FF) +- type over selection from middle of one line to middle of next + +- in middle of a word (span), quickly delete, then type a character, then delete (IE) +- paste text with blank lines from an external source +- meta-delete +- up arrow from beginning of line (WebKit) |