Author: bklaas
Date: Wed Dec 10 09:55:57 2008
New Revision: 3484
URL: http://svn.slimdevices.com?rev=3484&root=Jive&view=rev
Log:
Bug: 7186
Description: full browse history memory for SlimBrowse menus
Modified:
7.4/trunk/squeezeplay/src/squeezeplay/share/applets/SlimBrowser/DB.lua
7.4/trunk/squeezeplay/src/squeezeplay/share/applets/SlimBrowser/SlimBrowserApplet.lua
7.4/trunk/squeezeplay/src/squeezeplay/share/jive/slim/Player.lua
Modified: 7.4/trunk/squeezeplay/src/squeezeplay/share/applets/SlimBrowser/DB.lua
URL:
http://svn.slimdevices.com/7.4/trunk/squeezeplay/src/squeezeplay/share/applets/SlimBrowser/DB.lua?rev=3484&root=Jive&r1=3483&r2=3484&view=diff
==============================================================================
--- 7.4/trunk/squeezeplay/src/squeezeplay/share/applets/SlimBrowser/DB.lua
(original)
+++ 7.4/trunk/squeezeplay/src/squeezeplay/share/applets/SlimBrowser/DB.lua Wed
Dec 10 09:55:57 2008
@@ -46,7 +46,6 @@
local BLOCK_SIZE = 200
-
-- init
-- creates an empty database object
@@ -83,6 +82,9 @@
return self.windowSpec.labelItemStyle
end
+function getBlockSize(self)
+ return BLOCK_SIZE
+end
-- getRadioGroup
-- either returns self.radioGroup or creates and returns it
@@ -176,7 +178,13 @@
end
-- store chunk
- local key = math.modf(cFrom / BLOCK_SIZE)
+ local key = math.floor(cFrom/BLOCK_SIZE)
+
+ -- helpful debug flags to show what chunk key and range is being loaded
+ log:debug('********************************* loading key number ', key)
+ log:debug('********************************* cFrom: ', cFrom)
+ log:debug('********************************* cTo: ', cTo)
+
self.store[key] = chunk["item_loop"]
return self, self.count, cFrom, cTo
@@ -218,8 +226,8 @@
end
-function missing(self, accel, dir, index)
- log:debug(self, " missing accel=", accel, " index=", index, " dir=",
dir)
+-- the missing method's job is to identify the next chunk to load
+function missing(self, index)
-- use our cached result
if self.complete then
@@ -227,53 +235,103 @@
return
end
- -- load first chunk
- if not self.store[0] then
+ -- if index isn't defined we load first chunk, last chunk, then all
middle chunks from the top down
+ -- otherwise we load the chunk that contains index, then chunks on
either side of it back-and-forth until top and bottom chunks are filled
+ if not self.last_chunk or not self.last_chunk.count then
return 0, BLOCK_SIZE
end
-
+
local count = tonumber(self.last_chunk.count)
- -- load last chunk
+ -- determine the key for the last chunk in the chunk list
local lastKey = 0
if count > BLOCK_SIZE then
lastKey = math.modf(count / BLOCK_SIZE)
if lastKey * BLOCK_SIZE == count then
lastKey = lastKey - 1
end
+ end
+
+ local firstChunkFrom = 0
+ local firstChunkKey = 0
+
+ if not index then
+ -- load first chunk if we don't have it
+ if not self.store[0] then
+ return 0, BLOCK_SIZE
+ end
+ -- load the last chunk if we don't have it
if not self.store[lastKey] then
return lastKey * BLOCK_SIZE, BLOCK_SIZE
end
- end
-
- -- otherwise load in the direction of scrolling
- local fromKey, toKey, step = 1, lastKey, 1
- if dir < 0 then
- fromKey, toKey, step = toKey, fromKey, -1
+ -- up is done, so start searching downward
+ self.searchDirection = 'down'
+ self.upCompleted = true
end
-- search for chunks to load
- for key = fromKey, toKey, step do
- if not self.store[key] then
- local idx = key * BLOCK_SIZE
-
- log:debug(self, " missing ", BLOCK_SIZE, " items from
pos ", idx)
- return idx, BLOCK_SIZE
- end
- end
-
- -- if we reach here we're complete (for next time)
- log:debug(self, " complete (calculated)")
- self.complete = true
- return
-end
-
+ -- get key for first chunk if we don't have it
+ if index then
+ firstChunkFrom = index - ( index % BLOCK_SIZE )
+ firstChunkKey = math.floor(firstChunkFrom/BLOCK_SIZE)
+ end
+
+ -- don't search down if the first chunk loaded is also the last chunk
+ if firstChunkFrom + BLOCK_SIZE >= count then
+ self.downCompleted = true
+ self.searchDirection = 'up'
+ end
+
+ -- if both down and up are done, then we are done
+ if self.downCompleted and self.upCompleted then
+ -- if we reach here we're complete (for next time)
+ log:warn(self, " scan complete (calculated)")
+ self.complete = true
+ return
+ end
+
+ -- go up and down around firstChunkKey until we have self.store[0] and
self.store[lastKey]
+ if not self.searchDirection then
+ self.searchDirection = 'up'
+ end
+ if self.searchDirection == 'up' and not self.upCompleted then
+ -- start with previous key to first chunk, go to beginning
+ local fromKey, toKey, step = firstChunkKey-1, 0, -1
+
+ if not self.downCompleted then
+ self.searchDirection = 'down'
+ end
+ -- search for chunks to load
+ for key = fromKey, toKey, step do
+ if not self.store[key] then
+ local thisChunkFrom = key * BLOCK_SIZE
+ return thisChunkFrom, BLOCK_SIZE
+ end
+ end
+ self.upCompleted = true
+ end
+
+ if self.searchDirection == 'down' and not self.downCompleted then
+ if not self.upCompleted then
+ self.searchDirection = 'up'
+ end
+ -- start with next key from first chunk, go to end
+ local fromKey, toKey, step = firstChunkKey+1, lastKey, 1
+ for key = fromKey, toKey, step do
+ if not self.store[key] then
+ local thisChunkFrom = key * BLOCK_SIZE
+ return thisChunkFrom, BLOCK_SIZE
+ end
+ end
+ self.downCompleted = true
+ end
+
+end
function __tostring(self)
return "DB {" .. tostring(self.windowSpec.text) .. "}"
end
-
--[[
=head1 LICENSE
Modified:
7.4/trunk/squeezeplay/src/squeezeplay/share/applets/SlimBrowser/SlimBrowserApplet.lua
URL:
http://svn.slimdevices.com/7.4/trunk/squeezeplay/src/squeezeplay/share/applets/SlimBrowser/SlimBrowserApplet.lua?rev=3484&root=Jive&r1=3483&r2=3484&view=diff
==============================================================================
---
7.4/trunk/squeezeplay/src/squeezeplay/share/applets/SlimBrowser/SlimBrowserApplet.lua
(original)
+++
7.4/trunk/squeezeplay/src/squeezeplay/share/applets/SlimBrowser/SlimBrowserApplet.lua
Wed Dec 10 09:55:57 2008
@@ -144,6 +144,75 @@
return res
end
+-- turns a jsonAction table into a string that can be saved for a
browseHistory key
+local function _stringifyJsonRequest(jsonAction)
+
+ if not jsonAction then
+ return nil
+ end
+
+ local command = {}
+
+ -- jsonActions can be uniquely identified by the cmd and params
components
+ if jsonAction.cmd then
+ for i, v in ipairs(jsonAction.cmd) do
+ log:warn('cmd ', i, ': ', v)
+ command[#command + 1] = ' ' .. v
+ end
+ end
+ if jsonAction.params then
+ local sortedParams = table.sort(jsonAction.params)
+ for k in table.pairsByKeys (jsonAction.params) do
+ log:warn('key: ', k, ' val: ', jsonAction.params[k])
+ command[#command + 1] = ' ' .. k .. ":" ..
jsonAction.params[k]
+ end
+ end
+
+ return table.concat(command)
+end
+
+local function _getNewStartValue(index)
+ -- start with the first item if we have no history
+ if not index then
+ return 0
+ end
+ local BLOCK_SIZE = DB:getBlockSize()
+
+ -- if we have history, we want what is going to be the selected item to
be included in the first chunk requested
+ return math.floor(index/BLOCK_SIZE) * BLOCK_SIZE
+end
+
+
+-- _decideFirstChunk
+-- figures out the from values for performJSONAction, including logic for
finding the previous browse index in this list
+local function _decideFirstChunk(db, jsonAction)
+ local qty = DB:getBlockSize()
+ local commandString = _stringifyJsonRequest(jsonAction)
+ local lastBrowse = _player:getLastBrowse(commandString)
+
+ if not lastBrowse then
+ _player.menuAnchor = nil
+ end
+
+ local from = 0
+
+ log:debug('Saving this json command to browse history table:')
+ log:debug(commandString)
+
+ if lastBrowse then
+ from = _getNewStartValue(lastBrowse.index)
+ _player.menuAnchor = lastBrowse.index
+ else
+ lastBrowse = { index = 1 }
+ _player:setLastBrowse(commandString, lastBrowse)
+ end
+
+ log:debug('We\'ve been here before, lastBrowse index was: ',
lastBrowse.index)
+ _player.lastKeyTable = lastBrowse
+
+ return from, qty
+
+end
-- _priorityAssign(key, defaultValue, table1, table2, ...)
-- returns the first non nil value of table1[key], table2[key], etc.
@@ -412,6 +481,7 @@
-- performs the JSON action...
local function _performJSONAction(jsonAction, from, qty, step, sink)
log:debug("_performJSONAction(from:", from, ", qty:", qty, "):")
+
local cmdArray = jsonAction["cmd"]
-- sanity check
@@ -944,6 +1014,9 @@
-- count == 0 responses should not be typical
elseif step.menu then
step.menu:setItems(step.db:menuItems(data))
+ if _player.menuAnchor then
+ step.menu:setSelectedIndex(_player.menuAnchor)
+ end
-- update the window properties
step.menu:setStyle(step.db:menuStyle())
@@ -1013,7 +1086,7 @@
end
-- what's missing?
- local from, qty =
step.db:missing(step.menu:isAccelerated())
+ local from, qty = step.db:missing(_player.menuAnchor)
if from then
_performJSONAction(step.data, from, qty, step,
step.sink)
@@ -1141,7 +1214,7 @@
step.window:show()
_curStep = step
else
- from,
qty = step.db:missing(step.menu and step.menu:isAccelerated())
+ from,
qty = _decideFirstChunk(step.db, jsonAction)
_lockedItem = item
jiveMain:lockItem(item,
@@ -1181,7 +1254,7 @@
local function _requestStatus()
local step = _statusStep
- local from, qty = step.db:missing(step.menu:isAccelerated())
+ local from, qty = step.db:missing()
if from then
-- note, this is not a userRequest as the playlist is
-- updated when the playlist changes
@@ -1512,7 +1585,7 @@
or ( item['addAction'] == 'go' and
actionName == 'add' ) then
step, sink = _newDestination(_curStep,
item, _newWindowSpec(db, item), _browseSink, jsonAction)
if step.menu then
- from, qty =
step.db:missing(step.menu:isAccelerated())
+ from, qty =
_decideFirstChunk(step.db, jsonAction)
end
end
@@ -1587,10 +1660,22 @@
-- _browseMenuListener
-- called
local function _browseMenuListener(menu, db, menuItem, dbIndex, event)
+ log:debug("_browseMenuListener(", event:tostring(), ", " , index, ")")
+
-- ok so joe did press a key while in our menu...
-- figure out the item action...
local evtType = event:getType()
+
+ local currentlySelectedIndex = _curStep.menu:getSelectedIndex()
+ if _player.lastKeyTable and evtType == EVENT_FOCUS_GAINED then
+ if currentlySelectedIndex then
+ _player.lastKeyTable.index = currentlySelectedIndex
+ else
+ _player.lastKeyTable.index = 1
+ end
+ end
+
-- we don't care about focus: we get one everytime we change current
item
-- and it just pollutes our logging.
@@ -1601,8 +1686,6 @@
return EVENT_UNUSED
end
- log:debug("_browseMenuListener(", event:tostring(), ", " , index, ")")
-
-- we don't care about events not on the current window
-- assumption for event handling code: _curStep corresponds to current
window!
if _curStep.menu != menu then
Modified: 7.4/trunk/squeezeplay/src/squeezeplay/share/jive/slim/Player.lua
URL:
http://svn.slimdevices.com/7.4/trunk/squeezeplay/src/squeezeplay/share/jive/slim/Player.lua?rev=3484&root=Jive&r1=3483&r2=3484&view=diff
==============================================================================
--- 7.4/trunk/squeezeplay/src/squeezeplay/share/jive/slim/Player.lua (original)
+++ 7.4/trunk/squeezeplay/src/squeezeplay/share/jive/slim/Player.lua Wed Dec 10
09:55:57 2008
@@ -153,6 +153,18 @@
jnt:notify("playerCurrent", currentPlayer)
end
+
+function getLastBrowse(self, key)
+ if self.browseHistory[key] then
+ return self.browseHistory[key]
+ else
+ return nil
+ end
+end
+
+function setLastBrowse(self, key, lastBrowse)
+ self.browseHistory[key] = lastBrowse
+end
-- _getSink
-- returns a sink with a closure to self
@@ -253,7 +265,10 @@
isOnStage = false,
-- current song info
- currentSong = {}
+ currentSong = {},
+
+ -- browse history
+ browseHistory = {}
})
playerIds[obj.id] = obj
@@ -368,6 +383,8 @@
if oldInfo.power ~= self.info.power then
self.jnt:notify('playerPower', self, self.info.power)
end
+
+ log:debug('oldInfo.connected says: ', oldInfo.connected, '
self.info.connected says: ', self.info.connected)
-- Check if the player connected status has changed
if oldInfo.connected ~= self.info.connected then
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