user interface - Javascript, Text Annotations and Ideas -


i curious hear input others on problem i've been contemplating time now.

essentially present user text document , allow him/her make selections of text , annotate it. specific annotations aim achieve following:

  1. allow users make text selection, annotate it, save selection , annotation reference later
  2. (ui) support representing overlapped annotations. example if string where: "this test sentence example test sentence", user1 might have annotation on "is test sentence example" , user2 might have annotation on "for example".
  3. account situations document's text changes. annotations updated, if possible.

how tackle technical perspective?

some ideas i've had are:

  • use javascript ranges , store annotation pair of integers like: (document_start_char, document_end_char). save pair in db.
  • alternatively, using js text selected , save full text in db. (not sure how overlapping annotations)
  • represent overlapped annotations applying css style highlight text darken "stack" of annotations overlap. smallest annotation have on top of "stack".

what thoughts or areas of improvement? how heck support document's text being updated without breaking annotations?

http://mark.koli.ch/2009/09/use-javascript-and-jquery-to-get-user-selected-text.html

http://mark.koli.ch/2009/09/05/get-selected-text-javascript.html

getting selected text easy. storing (or starting/ending points) joke. point number 3? if text changes?

if text changes, both original text , original selection coordinates stored won't equal current modified text. should aware of annotations present in text document, everytime changes, annotations referencing particular piece of changed text should updated, or deleted (maybe after quick comparison between before , after text: words missing? or words have been corrected?), seems struggling task.

i think storing entire text annotation in db essential, avoid being changed , annotation lost. way still have complete text annotated. should use sort of flag indicate start character of annotation, , if text changes, calculate difference in characters document text before change, , 1 after it, , find way new starting point of original annotation (assuming annotation part of document text has't changed).

dividing text document in many paragraphs possible should help, way separate different pieces of document , work on 1 one.

now see done! :)


Comments

Post a Comment

Popular posts from this blog

c# - SharpSVN - How to get the previous revision? -

i trying find efficient way previous revision of file text comparison using sharpsvn. using (svnclient c = new svnclient()) { c.authentication.defaultcredentials = new networkcredential( configurationmanager.appsettings.get("svnserviceusername") , configurationmanager.appsettings.get("svnservicepassword") , configurationmanager.appsettings.get("svnservicedomain") ); c.authentication.sslservertrusthandlers += new eventhandler<svnsslservertrusteventargs>(authentication_sslservertrusthandlers); collection<svnfileversioneventargs> fileversioncollection = new collection<svnfileversioneventargs>(); svnrevisionrange range = new svnrevisionrange(0, this.hooks.revision); svnfileversionsargs args = new svnfileversionsargs(); args.retrieveproperties = true; args.range = range; foreach (svnchangeitem item in log.changedpaths) { string path = this.repositorypath + it...
Read more

c++ - Is it possible to compile a VST on linux? -

for class project i'm attempting write vst plugin backed cuda. current cuda workflow on linux box, i'd prefer compile , link there. according wikipedia , should possible (i couldn't find steinberg documentation relevant linux) can't find makefile or instructions on how build if aren't using xcode or visual studio. i'm vst 3 sdk doesn't support linux. when try compile plugin under linux, error: ./base/source/fatomic.cpp:39:30: fatal error: libkern/osatomic.h: no such file or directory this issue caused following code in "vst3 sdk/base/source/fatomic.cpp" #if mac #include <libkern/osatomic.h> #if mac_os_x_version_min_required > mac_os_x_version_10_4 #define native_atomic_type (volatile int32_t*) #else #define native_atomic_type (int32_t*) #endif #elif windows #include <windows.h> #endif but hope compiling under linux work vst sdk 2.4. reading. jvstwrapper seems run on lin...
Read more

url - Querystring manipulation of email Address in PHP -

i using third party application (email2http) send me emailid, body , message. unable retrieve email id due name appended on , enclosed < , >. here querystring getting. test.php?from=ajay+reddy &subject=cx&body=somebody when print variable in php returns name , not email id. $from = $_get['from']; echo $from; //output ajay reddy please suggest me how can emailid also. i dont want use post method due testing , debugging. it's working fine. forgot use htmlentities() in debugging.
Read more