Lots of random updates

[freerunner.git] / NOTES / TODO2

TODO: sep 2009, now that I am using this as my real phone:
 - send touch tone commands
 - keep record of incoming/outgoing calls
 - reduce time from wake to ring
TODO:
  DONE runit to scroll to the bottom
  DONE bigger buttons in runit
  text, not icons, for shop config stuff
  DONE launch/status to update more often
  DONE gsm info in launch/status
  DONE gsmd: reading 'extra' needs to cope with multiple lines:
  SMS:
    - update git
    - add 'xterm' so I can type...
    DONE - add 'esc' to 'tapinput'
    - look for launch errors in .xsession-errors:
  File "/usr/local/bin/launch", line 324, in press
    if not self.offsets:
AttributeError: 'Selector' object has no attribute 'offsets'

    - make sure launch updates when sms message arrives
    - find out why everything is so slow
    - make sure only one 'gsm-getsms' running at a time.  Maybe kill
      old one?
    - trace?? to find out why we don't seem to pick up a message on
       resume.  The newsms file gets changed but maybe no signal gets sent.
    - "sendsms -n" should go straight to 'new'.
    - clean up rubbish in 'new' and 'draft' files.
    - lock should be in charge of buzzer.
       It turns it off on 'wake' or after a timeout and turns it on when some file changes.
      Maybe there is an 'alert' file which gets 'sms' or 'ring'.
      In the case of 'ring' it is updates regularly.
      'lock' sets a buzz, turns on display, maybe beeps
    - run gsm-getsms at appropriate times
        -n when /var/run/gsm-state/new-sms changes
      DONE  -a at boot time, or when gsmd starts??
    - write some info to a 'new sms' file that I can watch for status
        Probably just watch the 'newmesg' log and update shortly after that changes.
    - improve atchan code - better abstractions
    - 'delete' should return to list view if in message view
    - Make sure sendsms notices when the files change
    - Make 'sender' and time easier to read.
       Probably make lines twice as high
       time can be 'today' and 'yesterday' and ' 5 minutes ago' etc
      mark day/month boundaries some how?
    - figure out if a '+' should be at the front of the phone number
    - look into timezone information on exesms messages
    - implement search function
    - Highlight 'new', 'draft' 'in/out' better.  Icon?
    - Don't duplicate a draft when we edit it.
    - Find some way to remove cruft from new/draft
    - buzz buzzer when message arrives.
    - include transit time in full message view.
    - Make messages disappear from 'new' when they are read.
    - popup reading in 'new' mode when selected from launcher
    - capture and decode catenated messages
    - figure out why changing lists is so slow.
    - implement undelete.
    - implement scrolling of message list
    - change 'open' to 'forward' or 'edit'
    - add 'reply' button
    ?? detect SIM card id and have separate mirror file??
            AT+CIMI
                 505038191025166
                 505038240084403
    - move 'config' to 'listing' page?
    - change between 'save draft' and 'cancel' when clear.
    - press-and-hold send to select handler
    - make 'paste' active only when there is something to paste
    - send only active when fields are filled in.

    
receive AT response +CBM: 4576,50,1,1,1
receive AT response South
receive AT response Sydney
receive AT response 

Sms-store:
  DONE store direction (in/out) and only one address (Sender or recipient)

Inter toy communication:
 e.g.
   play this tune
   call this number
   I want the speakers
   don't suspend just now
   call me on resume
   everybody pause

 Use X clipboards for specific messages
 use lock files for 'dont'
 use leases for 'call me' and 'everybody'
   That would require all running as same uid.
   Maybe DNOTIFY, but cannot use that well from python
   So write C helper and do inotify?
     But check gobject doco first.
   I think I can use dnotify OK, poll each file on each signal.
   So use that for 'call me on resume'
   Possibly for 'incoming call', 'received sms', 
   Maybe for 'Internet now available'
       Used by weather, time,
   Also 'GSM' and 'GPS' now available

 Root Properties - one-to-many messages. that are ui based.
   e.g. 'pause' 'ABC/abc/123/$%&', 'scale size'

 So: suspend.
   We have a directory /var/lock/suspend
   containing:
       auto:  Taking a LOCK_SH on this prevents auto suspend.
              If auto-suspender can get a LOCK_EX, it suspends, then
                  unlocks on resume
       suspend: Taking a LOCK_SH on this prevents any suspend completing.
               However any locker must also watch the file with e.g.
               dnotify, and when the file is nonempty, the lock must be
               released promptly.
       next_suspend:  Taking a lock on this while holding a lock on
               suspend ensures that you will not miss a suspend/resume cycle.
               On resume, the file is renamed to 'suspend',
               So 'dnotify' can discover when resume happens and a subsequent
               suspend will not complete until the lock is released.

    A client with:
      take a lock on 'suspend'
      check that link count is non-zero (if zero, close and loop)
     loop:
      set up for active system
      wait
      when there is a change in the file:
        set up for suspend
        possibly take lock on next_suspend
        release lock
        wait for activity on next_suspend (which will be renamed to 'suspend')
        goto loop
               

Alert:
   Alert is currently part of 'lock'.  Is that a good idea?
   The connection is that we only want to sound an alert if there is
   an easy way to turn it off - and 'lock' is in the best position to
   turn things off.  It is closest to the user.  If lock isn't
   running,  don't want to make any noise.

   Alert needs:
     - different alerts:  ring, sms, alarm, low-battery
     - different sub-alerts:  ring/family. sms/work, alarm/urgent
     - different settings: silent, unobtrusive, normal
     - different actions: tone, buzz, flash, repeat count, volume
                  change, LED flash, screen flash.
     - some alerts stop when there is user input (tone).  Some
       continue (LED)
   
     - concurrent alerts??  alarm and SMS at same time?
         As long as we get attention, and display status on screen..
         Maybe need alert priority and only play the most important.
    
   Configuration: too complex for just directories with symlinks to
     .wav files.
     Still want to make it easy to change config, either temp or perm.

     Config changes can be
      -  time based
      -  location based?
      -  orientation based
      -  user-requested

     Does the alert program do this itself, or does some other program
     move files around?

     Maybe have a set of .ini files where settings cumulate.
     Read base, then others
      - calendar program creates a plan every so often which lists
        time - profile  e.g. 20090228-123456  silent
                             20090301-012334  -
      - The location service gives a name to where we are, as precise
        as possible.  We then look for setting "location-$NAME"
      - ditto for orientation.


Disable 'xset' screen blan!k

tapinput:
  DONE differently OK should become 'go away'
  DONE Need a 'mode' where all 12 are used.  press/hold mode/del to recover.
  DONE Move > half off screen, and disappear.
  DONE statusicon to recover
  DONE Add:  Ret UP DOWN LEFT RIGHT 


Weather:
  Waits for 'internet now available' and if more than 8 hours since
   last check, download weather details.

Library:
  Selector
   Currently used in
           launcher (folders/tasks), music, shop, sendsms
   Features:
       - goes multi-column if possible/needed
       - auto-scroll when near extreme
       - tap selects but doesn't activate
       - small left/right tap areas for select-and-activate
       - simple text with different colours, or app-specific rendering
       - alternating background, background for highlight
       - drags used for text entry

  AutoBox
    Acts like vbox or hbox depending on available space

  Slider
    pop-up window


Note pad with search.
  This might just be an extension to scribble.
   - simple text file editor
   - multiple pages with a list that can be selected from
   - search across all pages - show page name and line.
   - mark pages 'read-only'
   (ideas from tomboy)
   - text size.  features:  highlight strikethrough bold italic
   - 'link' a word to a page of the same name.
   - group pages into notebooks???
   - scrollable pages?
   - collapsable lists.

Scribble:
  - larger buttons
  - ??save png??
  - allow grouping of texts with tap-draw-hold
  - when we have a group of texts, allow
       - align
       - sort
       - fold
  - move a text with tap-hold-draw
  - easier to select individual text
  - allow text to be deleted - maybe drag to corner
  - new line gets leading number or bullet or whatever
  - I need:
       'text' entries to record opposite corner when drawn
       some set of the last N text entries
         these are drawn with a grey background??
       select text

runit
  Set window name to something appropriate
  DONE run a command and display the output.  No user interaction(yet)
  DONE One button to close
  Possible additions.
   - rerun button
   - different colour for stderr
   - buffer to build text, then enter it
  Combine with launcher??? or teach launcher to understand it better
  Make it easier to run a little shell script


lock:
 DONE Be more careful about counting up/down - count per button.
 DONE  be careful about press/release difference
 DONE  allow insta-lock with icon
 LATER use lockfile to tell when someone wants no-blank
 LATER Have lockfile for 'next suspend'. use inotify for clients
    to find out when 'next' becomes 'now'
 DONE use lockfile to tell when someone wants no-suspend
 DONE suspend when more idle
 DONE use external net connections to disable suspend
 DONE maybe don't suspend while charging (of >50%)
 DONE don't suspend while load-average is high
 DONE no-suspend setting.
 Only check TCP if keep-alive is working....
 Use alsa to play tones for alerts.  Also buzz
   Alerts are requested by creating file /var/run/alert/$name
   where 'name' is something like 'sms' or 'ring' or 'alarm'
   We look for /etc/alert/$name to find out what to play.
    Not sure how to include
        tone
        volume
        repeat/louder
        vibrate
        display brightness
        LED flash

 We terminate the alert tone when a button is pressed
     Vibrate continues if it is a repeating alert (ring)


Event Viewer
  Events such as SMS, missed-call, alarm get appended to a file
  The viewer shows recent events and allows the relevant window to be
  selected.
  It has a blinking statusicon when there are new events

  This is probably just included in launcher

PictureViewer
  one pane which just shows a photo, is full screen, taps left and right moves
  one pane with browser showing date information 
  thumbnails?

Address Book
   store addresses with phone numbers
   lookup and display
   Format address label as postscript for printing
   send phone number to dialler

   Store:
     Names
     Addresses - people share these
     Phone number - people have several, and share them
     Email address - again, can be multiple and shared.

   So we allow entries to include others by reference

   Name - given / family
   Category  (family, collegue, church, ...)
   Address[desc] - l1 / l2 / postcode / country
   Phone[desc] - number
   Email[desc] - addr
   group[desc] - entity

   What key to use for 'entity' ??
      Name?  not unique and can change.
      UUID I guess.  assigned sequentially.  Maybe use hostname to
         uniqueify

   Store:
     notabene.1234 = {
         name = { given = Neil ; family = Brown }
         Category = me;
         Category = Family;
         address = { type=Home; a= "13 Lang Ave";
                         city="Pagewood"; postcode=2019;
                         country = Australia
         }
         Phone = { type=mobile; num=0403463349; }
         Valid = date
     }
         
 
  That is horribly verbose and not needed.
  Though if we store gzipped, it isn't much waste.

   We don't really want to store it in memory as that isn't paged out,
   So we want an ondisk format which is very easy to parse.  Hopefully
   it will be cached most of the time.
   So: ':' separated fields with ',' separated subfields and '=' assignments
     id:family:given:cat,cat:ref,ref:PO:addr:addrext:city:postcode:country:mobile=number,work=number:Date

   Should probably use VCARD - it isn't that hard.
   Just ignore the bits we don't understand yet.
   When editting, only change fields we understand.
   When there are interdependent fields like N vs FN and ADR vs LBL
    that can be awkward.

   No.  Don't like VCARD - no references (that I can find) as no ID for each entry ???

   Anyway I'll use my own internal format and maybe export/import one day if I decide to care.

   We mmap the file and typicaly use 're' to search through it, while holding a read lock and having
   checked the size.

   We access the address book by extracting addresses.
   'first', 'next'
   These can have an 're' argument meaning 'first/next that matches re'
   File contains an initial line with a version number, so that each line starts and ends
   with '\n'.  Thus each field starts and ends with [\n:,=]

   How to integrate this?
     Any program that just needs read access goes direct to the file, mmaping and searching
     Auto updates such as 'last used' can similarly be on on the mmapped file.
     Updates need to be handled by a single GUI.
     When someone - e.g. SMS or Call-Log - wants to store a number or edit an entry,
      they put a resource on the root window.  If the contact list is watching, it
       picks it up.  If it isn't, the button is greyed out (or we run the program)

     The contact editor:
        Has an edit window where content of interest appears

music:
  doesn't always move forward at end-of-song
  have better way to 'play chosen song'
  If 'seek' dropdown didn't select a time, don't jump at all.
  report song on root window property
  Have fs browser to find music folder(s)
  survive suspend somehow
  Don't seek when there is nothing to seek (negative offset??)
  record current location for restart
  remove "/home/music/ogg" from displayed path
  grab /var/run/suspend_disabled when playing
  DONE add volume control
  DONE Think about seek control
  Maybe support HTTP: uris such as classic-fm
  Support Random-Album
  Support Random-Song
  tap 'current song' to go there in browser
  search by substring

clock:
  sync to real time properly
  alarm clock:
    periodic or one-off
    wake to music or buzzer
  pop up:
    set timezone
    show date/calendar
    ntpdate
    gpsdate
    gps-timezone

Shopping List
   Need to add/edit locations and places.
   When 'choose location' or 'choose place' is up, the
   'add' and 'edit' button affect the location name instead of the product
   renaming a thing to 'empty' only works if it is not in use.
   When we click 'config', product list is replaced by location list.
   Click 'config' again to go back.  Different background colour??
   If we change place, it changes set of locations
   '+' adds a new location
   'edit' changes the name of current location
   zoom still exist
   tick and cross become up and down to move current location

    
Battery
  try to get more timely alerts without polling  - Need to use DBUS.
  DONE  Select between pop-up new window and restore old window
  DONE Show time_to_{full,empty}_now in correct units
  ?? use 'status' for 'Charging' ...
  DONE timeout to make window disappear?  or to refresh display
  DONE  pop up window with
    suspend
    shutdown
    500/1000 mAmps
    
network
  need to consider Wifi, USB, bluetooth, gprs, BT/ppp
   Show status of each
   device specific page for each:
    Wifi:
       list access points
       connect with DHCP, enter WPA-PSK
       suspend mode: power off or WOW
    USB:
       disable/DHCP-client/DHCP-server
       if dchp-server: have list of address configs to choose between
        if another network is active, choose based on that.
    Bluetooth
       list peers
       connect
       listen
       DHCP client/server
       disable/power down
       ppp over rfcomm
    GPRS
       on-demand
       enter AP

launcher
  content for status page:
    - date, time,  timezone??
    - GSM carrier, Cellid  strenght?
    - Network connectivity
    - new messages
    - missed calls
    - last window
    - GPS co-ords?
    - next reminder
    - top of todo list??
    - load average / uptime
  Delay "wmctrl -l" a bit so that we start up faster ??

  support displaying values from root attributes
  run wmctrl at the right time better.
  have a 'status' folder which shows 'today'
  use pango.markup
  Don't adjust sizes of entires
  Allow different sizes items - keep list of offset for click
  Don't allow item to be selected if no buttons
  Center type. MAybe "type" can be e.g. "cmd:center" or "thing:right"
  How to schedule redraw of e.g. time / date / etc
     Expensive tasks would need to cache values incase they are called too often.
  don't iconize- just stay behind
  watch root properties to be notified of window changes.

  DONE direct button access
  DONE list options
  DONEkill window
  DONE reload option

  DONE Two columns with button row at bottom.
  DONE First column is cmd group and includes 'active windows'
  DONE Second column is options in the group
  DONE Buttons are "run" or "stop"

  I want a third column.  When it appears, the first column disappears.
  This can be used for:
    - address-book access when making a call
    - log of recent calls - in or out
    - todo list?
  Why not just put these in the second column with the trigger in the first.
  So first column gets:
     contact:  shows address book.
               text entry reduces list
               selection provides 'call' and 'txt' and 'open' buttons
     calls:  shows similar list, but of recent calls.  Can call back
             or save numbers.
  Selecting 'last call' or 'dialout' in status window can allows jump to
     this different page.

  I think I need to rewrite launcher from scratch - it got messy.
  Have same layout:
    - text entry at the top:
          any change is sent to any visible task
    - buttons at the bottom.
          these are chosen by active task
    - left column of task groups.
        apps comms calls contacts windows games status
    - right column of tasks

  A 'tasklist' is given to each column and can be static or dynamic.
  A 'task' has an appearance and an action.
  For the right column, the action sets the left column.
  For the left column, the action sets the buttons
  The buttons also have appearance and action.  The action
   can do all sorts of things:
    - run or kill program
    - raise or close window
    - make phone call / hang up

  The two columns can be replaced by a textarea that displays the output
  of some command.

  The 'aux' button can be pressed or held.
   - press raises the window, then selects 'status', then returns to previous window
   - hold ... what can that do?  Answer the phone?
  Maybe if a task is signalling for attention, then 'press' goes to
   that task, and 'hold' activated the first button for the task.

  I need to define the interface for pluggins.
   A plugin needs to be able to:
      - create a task
      - create a group
      - watch a file
      - run a process
      - open a window
      - Add an embedded-window
   
   A task must be able to
      - display a text
      - present some buttons
      - present an embedded window
      - receive keyboard input
      - request that a different task or group be selected

   Some examples of the embedded window:
     - tap-board for text/number entry
     - calendar - one month
     - text, e.g. SMS message, email

  Config file:
   This stores a list of groups.
   Some groups need no further details (e.g. active windows)
   Others need to explicitly list tasks
    Tasks can be:
      Internal (in a module)
      External-window (program to run, window to find)
      External-text

    When listing explicit tasks we can use:
      !command
          for external-text
      (window) command
          for external-window, where 'window' is the name of the window
      module.command
          for an internal module

   Each group is given in config file as:
     [name/type]
   if '/type' is missing, "list" is assumed.
   Types and the required content are:
     list
        a series of task descriptions
     windows
        a series of window names to ignore (?)
     contacts
        file= name of address book
     call-log
        nothing - the call log has a standard location
     
   If 'type' is 'modules', then each line names a module
   
   Modules have an entry point "init" which returns:
     a list of group types supported
     a list of internal commands
   each is paired with an object-creation command.

   A 'group' object must be able to parse config lines
    and produce a task list etc.

gpstrack
  pygtk similar to tangogps

   Display maps, zoom follow GPS
     Separate threads for file loading, GPS track, and UI
     3-D view of path??
   record path followed
     Always compress and write to a file
   record drawn path
   download maps
      - always all parent maps for a given download
      - download maps along a path (to some depth/width)
         This includes a drawn path.
   If map not available, scale other resolution
   record locations
   display locations
   report time-to-first-fix
   three different modes interpretting drag
    1/ move map around
    2/ draw a path on the map
    3/ write text to tag location or path.


Bible viewer:
  Store KJV
  Download and cache NIV if Network available.
  Windows:

Sound recorder:
 - support pause/restart
 - play from start, play last 10 seconds, seek
 - allow naming of music files
 - adjustable audio level??
 - adjustable compression ??  speex/vorbis

phone functions
 ON-CALL
   pops up when a call becomes active
   presents number*# buttons for tones
   Allows HOLD/CALL-WAITING/HANG_UP
   Disappears when no call is active
   Should handle VOIP too, including call-waiting
   Logs times??
   disables suspend
   un-pause after the call ??
   Warning tone at points in call time

 Answer-Call
   Display CNI, look up in address book
   Choose ring tone bassed on number and time of day??
   Check device position and be quiet if face down.
   
 Make Call
   allow number to be entered somehow
   choose VOIP or mobile, while number is being entered.
   silence music, disable suspend
   Make connections, log, trigger ON-CALL

 SendSMS
   text + recipient 
    send via eXeTeL if network is up, else ??

   Editor window:  simple text, no new lines. auto scroll,
     simple editing
     spell check
     auto-wrap

    Q:
     How to select for cut/paste?? 
       'cut' button is normally 'select'.
       tap that, then draw range, then 'cut'
     status bar with valid spellings?  and common continuations
   Buttons:
     send:   sends to one or more addresses
     draft:  save as a draft and go to list of drafts
     config: go to config page.

   If sending fails, save as draft and go to draft page.
   If it succeeds, save as 'send' and save to 'sent' page.

   'message list' page shows one message per line.
   messages can be selected.
   the selected message can be:
       deleted
       reloaded for send
       viewed?
   The list can be:
       all / draft / new / sent / received
       restricted by search string
       up/down a page
    So:
     Top:
      delete/view/send buttons
     Bottom:
      One button rotates through all/draft/new/sent/received
      two for up/down
      one for search

   Config options:
      backend to use for different class of number.
      each backend has a config page.
         exetel userid and password

 RecvSMS
   Database of all messages
   Highlight unread messages
   Sort in selectable order - provide virtual folders
        Date, Month, Sender "contains text"

   Handle VCARD:
0000000 006 005 004   # 364  \0  \0   B   E   G   I   N   :   V   C   A
0000020   R   D  \r  \n   V   E   R   S   I   O   N   :   2   .   1  \r
0000040  \n   N   :   F   a   n   n   y  \r  \n   T   E   L   ;   P   R
0000060   E   F   ;   W   O   R   K   ;   V   O   I   C   E   :   9   2
0000100   3   4   8   9   0   8  \r  \n   T   E   L   ;   C   E   L   L
0000120   ;   V   O   I   C   E   :   0   4   3   3   2   3   1   0   6
0000140   9  \r  \n   T   E   L   ;   H   O   M   E   ;   V   O   I   C
0000160   E   :   0   2   9   6   6   1   8   8   8   8  \r  \n   E   N
0000200   D   :   V   C   A   R   D  \r  \n
BEGIN:VCARD^M
VERSION:2.1^M
N:Fanny^M
TEL;PREF;WORK;VOICE:92348908^M
TEL;CELL;VOICE:0433231069^M
TEL;HOME;VOICE:0296618888^M
END:VCARD^M


 SMS storage:

  ** Worry about ASCII / UNICODE
  a/ could use one file per message, named by time
     with links to a directory for 'draft' or 'new'
     But that wastes space.
  b/ could use a TDB database, keyed by date, with
     a hierarchy of days and years for directories.
  c/ plain text file, one per month
     'new' and 'draft' are separate files that list ids.

  Probably c.

  Each SMS entry is one line, space separated:
    date-time  %Y%m%d-%H%M%S.uuid
    'from' number
    'to' numbers, comma separated
    'text' of message, URL encoded on to one line with no spaces.

  Hmm.. 


  More on storage.
    There are two dates that could be of interest.
      - the time I first saw the message (my clock)
      - the time the message was sent (with incoming messages).
     We need to record both of these.
     For outgoing, there could be "time message successfully sent"


----------------------------------------------------------------
Thinking about buttons.

 - I want to easily/quickly get to 'main page' with time and status etc.
   But sometimes I want to get 'back where I was' after a screen blank

 - I want the 'power' button to always do the same thing.  It wakes up
   from suspend, so it must wake up the same way from blank.
   But what should it present:  last screen, last launcher, or status?
   It should be the thing I most likely want after a long abscence, which
   would be the front status page.
   It should also be the thing that I can use when there is an incoming call.
   That would be something with an 'answer' button.  So The status page
   with 'incoming call' selected and 'answer/cancel' buttons at the bottom.
   'Answer' would alert the GSM-call window to pop up and answer the call.

 - So the aux button does:
    - nothing during suspend
    - wakeup display during blank
    - launcher when active

 - But that means the lock program needs to grab AUX, so the earpiece
   switch gets grabbed too.  So either the lock program handles earpiece
   switching, or it signals someone else.  I guess we write to a file when
   that changes.  Though we could go direct to scenarios symlink.
   How complex should this be?
     /var/lib/audio/scenario -> handset or headset
     handset -> scenario/handset  ditto for headset
     scenario points to gsm, voip, stereo, record, gsm-speaker
     these are each directories which contain 2 .state files.

 - Maybe I want a button to bring up the tap-board as well??

 Maybe:
   power button always brings up control window, and selects status
   aux button returns to



And about lights.
We have two lights.
One can be red.
One can be blue, orange, or purple.
We can used the signal:
  - charging state (powered, battery full)
  - ringing state (could be different colour depending on if we know them)
  - blank-but-not-off-yet
  - wifi associated (might be a waste of battery...)
  - 

PLAN:

 - arrange for power button to present status page
 - Sort out tapinput usage
 - install sendsms and make sure I can send via GSM
 - sync SMS messages from SIM to flash
 - display unread message info in status page
 - tap on that goes to SMS application


QVGA:
 qvga-normal & normal in "/sys/bus/spi/devices/spi2.0/state" .

SMS/cellid
  www.opencellid.org

  Keep database of locations and cells I have seen.
  Don't add duplicates that are within 100m... say 3 seconds or arc.

  ?? Create a key by interleaving bits from lat and long
   That gives discontinuities.. but we only need to search 2 places.. well, 4.
    So if we want lat==a..b and long==c..d
    We find the most sig bit in which a and b (resp c and d) differ
    and need to check

----------------------------------------------------
What happens when I type text.  I might want to:

   - make a phone call .. or SMS
   - look up name in address book
   - calculate result
   - add to TODO list
   - lookup in shopping list

Maybe each 'task' can register a text handler.
 They get called when text changes and can update their name??
 They could make themselves active, but hopefully only one would do that.
 How could 'address book' show a list of possibles?

I have outgoing calls sortof working.
Need:
  - gsmd to know and track status in 'incoming'.
  - wait for atchan to be set up so I don't have to press twice DONE
  - clean text when call completes
  - steal keyboard input for touchtones ??
  - call history
  - address book lookup


----------------------------------------
Main page currently has
  two columns for selection/status
  buttons at bottom for action

  Want text input line at the top for e.g. phone number,
  contact name, calculation, note search
  But when not typing anything it is visually unpleasant.
  For buttons at bottom, they simple provide more space.
  That doesn't work so well at the top.. unless we can do something with the
  'gravity' setting .. seems unlikely.
  So I want something permanent there when there is no input.