@ -199,64 +199,68 @@ clearCacheBtn.addEventListener("click", async () => {
} }
} ) ; } ) ;
// Event listener for saving the session
// Event listener for saving the session
saveSessionBtn . addEventListener ( 'click' , ( ) => {
// We can only save a session if at least one data file has been loaded.
if ( ! appState . jsonFilename && ! appState . videoFilename ) {
showModal ( "Nothing to save. Please load data files first." ) ;
return ;
}
// Collect all relevant state into a single object.
const sessionState = {
version : 1 ,
jsonFilename : appState . jsonFilename ,
videoFilename : appState . videoFilename ,
offset : offsetInput . value ,
playbackSpeed : speedSlider . value ,
snrMin : snrMinInput . value ,
snrMax : snrMaxInput . value ,
toggles : {
snrColor : toggleSnrColor . checked ,
clusterColor : toggleClusterColor . checked ,
inlierColor : toggleInlierColor . checked ,
stationaryColor : toggleStationaryColor . checked ,
velocity : toggleVelocity . checked ,
tracks : toggleTracks . checked ,
egoSpeed : toggleEgoSpeed . checked ,
frameNorm : toggleFrameNorm . checked ,
debugOverlay : toggleDebugOverlay . checked ,
debug2Overlay : toggleDebug2Overlay . checked ,
closeUp : toggleCloseUp . checked ,
predictedPos : togglePredictedPos . checked ,
covariance : toggleCovariance . checked ,
}
} ;
const sessionString = JSON . stringify ( sessionState , null , 2 ) ;
const blob = new Blob ( [ sessionString ] , { type : 'application/json' } ) ;
const url = URL . createObjectURL ( blob ) ;
// --- Dynamic Filename Logic ---
const now = new Date ( ) ;
const pad = ( num ) => String ( num ) . padStart ( 2 , '0' ) ;
const date = ` ${ now . getFullYear ( ) } - ${ pad ( now . getMonth ( ) + 1 ) } - ${ pad ( now . getDate ( ) ) } ` ;
const time = ` ${ pad ( now . getHours ( ) ) } - ${ pad ( now . getMinutes ( ) ) } - ${ pad ( now . getSeconds ( ) ) } ` ;
const timestamp = ` ${ date } _ ${ time } ` ;
const defaultFilename = ` visualizer-session_ ${ timestamp } .json ` ;
// --- Trigger "Save As" Dialog ---
const a = document . createElement ( 'a' ) ;
a . href = url ;
// This is the key instruction for the browser. It suggests a filename
// and signals that this should open a "Save As" dialog.
a . download = defaultFilename ;
saveSessionBtn . addEventListener ( "click" , ( ) => {
// We can only save a session if at least one data file has been loaded.
if ( ! appState . jsonFilename && ! appState . videoFilename ) {
showModal ( "Nothing to save. Please load data files first." ) ;
return ;
}
document . body . appendChild ( a ) ;
a . click ( ) ; // Programmatically clicking the link triggers the download/save dialog.
// Collect all relevant state into a single object.
const sessionState = {
version : 1 ,
jsonFilename : appState . jsonFilename ,
videoFilename : appState . videoFilename ,
offset : offsetInput . value ,
playbackSpeed : speedSlider . value ,
snrMin : snrMinInput . value ,
snrMax : snrMaxInput . value ,
toggles : {
snrColor : toggleSnrColor . checked ,
clusterColor : toggleClusterColor . checked ,
inlierColor : toggleInlierColor . checked ,
stationaryColor : toggleStationaryColor . checked ,
velocity : toggleVelocity . checked ,
tracks : toggleTracks . checked ,
egoSpeed : toggleEgoSpeed . checked ,
frameNorm : toggleFrameNorm . checked ,
debugOverlay : toggleDebugOverlay . checked ,
debug2Overlay : toggleDebug2Overlay . checked ,
closeUp : toggleCloseUp . checked ,
predictedPos : togglePredictedPos . checked ,
covariance : toggleCovariance . checked ,
} ,
} ;
document . body . removeChild ( a ) ;
URL . revokeObjectURL ( url ) ;
const sessionString = JSON . stringify ( sessionState , null , 2 ) ;
const blob = new Blob ( [ sessionString ] , { type : "application/json" } ) ;
const url = URL . createObjectURL ( blob ) ;
// --- Dynamic Filename Logic ---
const now = new Date ( ) ;
const pad = ( num ) => String ( num ) . padStart ( 2 , "0" ) ;
const date = ` ${ now . getFullYear ( ) } - ${ pad ( now . getMonth ( ) + 1 ) } - ${ pad (
now . getDate ( )
) } ` ;
const time = ` ${ pad ( now . getHours ( ) ) } - ${ pad ( now . getMinutes ( ) ) } - ${ pad (
now . getSeconds ( )
) } ` ;
const timestamp = ` ${ date } _ ${ time } ` ;
const defaultFilename = ` visualizer-session_ ${ timestamp } .json ` ;
// --- Trigger "Save As" Dialog ---
const a = document . createElement ( "a" ) ;
a . href = url ;
// This is the key instruction for the browser. It suggests a filename
// and signals that this should open a "Save As" dialog.
a . download = defaultFilename ;
document . body . appendChild ( a ) ;
a . click ( ) ; // Programmatically clicking the link triggers the download/save dialog.
document . body . removeChild ( a ) ;
URL . revokeObjectURL ( url ) ;
} ) ; } ) ;
// When "Load Session" is clicked, it triggers the hidden file input.
// When "Load Session" is clicked, it triggers the hidden file input.
@ -266,64 +270,75 @@ loadSessionBtn.addEventListener("click", () => {
// This listener handles the selected session file.
// This listener handles the selected session file.
sessionFileInput . addEventListener ( 'change' , ( event ) => {
const file = event . target . files [ 0 ] ;
if ( ! file ) return ;
sessionFileInput . addEventListener ( "change" , ( event ) => {
const file = event . target . files [ 0 ] ;
if ( ! file ) return ;
const reader = new FileReader ( ) ;
reader . onload = async ( e ) => { // Make the function async to use 'await'
try {
const sessionState = JSON . parse ( e . target . result ) ;
const reader = new FileReader ( ) ;
reader . onload = async ( e ) => {
// Make the function async to use 'await'
try {
const sessionState = JSON . parse ( e . target . result ) ;
// Basic validation to ensure it's a valid session file.
if ( sessionState . version !== 1 || ! sessionState . jsonFilename ) {
showModal ( "Error: Invalid or corrupted session file." ) ;
return ;
}
// Basic validation to ensure it's a valid session file.
if ( sessionState . version !== 1 || ! sessionState . jsonFilename ) {
showModal ( "Error: Invalid or corrupted session file." ) ;
return ;
}
// --- START: New Robust Session Check ---
// --- START: New Robust Session Check ---
// 1. Before doing anything else, check if the required files exist in the cache.
// We use the same 'loadFreshFileFromDB' function that the startup process uses.
const videoBlob = await loadFreshFileFromDB ( "video" , sessionState . videoFilename ) ;
const jsonBlob = await loadFreshFileFromDB ( "json" , sessionState . jsonFilename ) ;
// 1. Before doing anything else, check if the required files exist in the cache.
// We use the same 'loadFreshFileFromDB' function that the startup process uses.
const videoBlob = await loadFreshFileFromDB (
"video" ,
sessionState . videoFilename
) ;
const jsonBlob = await loadFreshFileFromDB (
"json" ,
sessionState . jsonFilename
) ;
// 2. If either file is missing from the cache, show an informative error and stop.
if ( ! jsonBlob || ! videoBlob ) {
showModal ( ` Session load failed: The required data files are not in the application's cache.
// 2. If either file is missing from the cache, show an informative error and stop.
if ( ! jsonBlob || ! videoBlob ) {
showModal ( ` Session load failed: The required data files are not in the application's cache.
Please manually load '${sessionState.jsonFilename}' and '${sessionState.videoFilename}' before loading this session . ` );
Please manually load '${sessionState.jsonFilename}' and '${sessionState.videoFilename}' before loading this session . ` );
event . target . value = '' ; // Reset file input
return ;
}
// 3. If we get here, it means the files ARE in the cache and match the session!
// It is now safe to set localStorage and reload the page.
localStorage . setItem ( 'jsonFilename' , sessionState . jsonFilename || '' ) ;
localStorage . setItem ( 'videoFilename' , sessionState . videoFilename || '' ) ;
localStorage . setItem ( 'visualizerOffset' , sessionState . offset || '0' ) ;
localStorage . setItem ( 'playbackSpeed' , sessionState . playbackSpeed || '1' ) ;
localStorage . setItem ( 'snrMin' , sessionState . snrMin || '' ) ;
localStorage . setItem ( 'snrMax' , sessionState . snrMax || '' ) ;
if ( sessionState . toggles ) {
localStorage . setItem ( 'togglesState' , JSON . stringify ( sessionState . toggles ) ) ;
}
// Inform the user and then reload the page to apply the session.
showModal ( "Session files found in cache. The application will now reload." ) . then ( ( ) => {
window . location . reload ( ) ;
} ) ;
// --- END: New Robust Session Check ---
} catch ( error ) {
showModal ( "Error: Could not parse the session file. It may be invalid." ) ;
console . error ( "Session load error:" , error ) ;
}
} ;
reader . readAsText ( file ) ;
event . target . value = '' ; // Clear the input for future loads.
event . target . value = "" ; // Reset file input
return ;
}
// 3. If we get here, it means the files ARE in the cache and match the session!
// It is now safe to set localStorage and reload the page.
localStorage . setItem ( "jsonFilename" , sessionState . jsonFilename || "" ) ;
localStorage . setItem ( "videoFilename" , sessionState . videoFilename || "" ) ;
localStorage . setItem ( "visualizerOffset" , sessionState . offset || "0" ) ;
localStorage . setItem ( "playbackSpeed" , sessionState . playbackSpeed || "1" ) ;
localStorage . setItem ( "snrMin" , sessionState . snrMin || "" ) ;
localStorage . setItem ( "snrMax" , sessionState . snrMax || "" ) ;
if ( sessionState . toggles ) {
localStorage . setItem (
"togglesState" ,
JSON . stringify ( sessionState . toggles )
) ;
}
// Inform the user and then reload the page to apply the session.
showModal (
"Session files found in cache. The application will now reload."
) . then ( ( ) => {
window . location . reload ( ) ;
} ) ;
// --- END: New Robust Session Check ---
} catch ( error ) {
showModal ( "Error: Could not parse the session file. It may be invalid." ) ;
console . error ( "Session load error:" , error ) ;
}
} ;
reader . readAsText ( file ) ;
event . target . value = "" ; // Clear the input for future loads.
} ) ; } ) ;
// --- END: Add Session Management Logic ---
// --- END: Add Session Management Logic ---
@ -685,29 +700,83 @@ videoPlayer.addEventListener("ended", () => {
} ) ; } ) ;
document . addEventListener ( "keydown" , ( event ) => { document . addEventListener ( "keydown" , ( event ) => {
if (
! appState . vizData ||
[ "ArrowRight" , "ArrowLeft" ] . indexOf ( event . key ) === - 1
)
// --- FIX APPLIED HERE ---
// We only want to block shortcuts if the user is actively typing in a text or number input.
// This allows shortcuts to work even when other elements, like the timeline slider, are focused.
const isTextInputFocused = event . target . tagName === 'INPUT' && ( event . target . type === 'text' || event . target . type === 'number' ) ;
if ( isTextInputFocused ) {
return ;
}
// --- END OF FIX ---
const key = event . key ;
// We can add any new shortcut keys to this array.
const recognizedKeys = [ "ArrowRight" , "ArrowLeft" , " " , "1" , "2" , "3" , "4" , "t" , "d" , "c" , "r" , "p" , "a" , "s" ] ;
if ( ! appState . vizData || ! recognizedKeys . includes ( key ) ) {
return ; return ;
}
event . preventDefault ( ) ; event . preventDefault ( ) ;
if ( appState . isPlaying ) {
appState . isPlaying = false ;
playPauseBtn . textContent = "Play" ;
videoPlayer . pause ( ) ;
// --- Spacebar for Play/Pause ---
if ( key === " " ) {
playPauseBtn . click ( ) ;
} }
let newFrame = appState . currentFrame ;
if ( event . key === "ArrowRight" )
newFrame = Math . min (
appState . vizData . radarFrames . length - 1 ,
appState . currentFrame + 1
) ;
else if ( event . key === "ArrowLeft" )
newFrame = Math . max ( 0 , appState . currentFrame - 1 ) ;
if ( newFrame !== appState . currentFrame ) {
updateFrame ( newFrame , true ) ;
appState . mediaTimeStart = videoPlayer . currentTime ;
appState . masterClockStart = performance . now ( ) ;
// --- Arrow keys for frame-by-frame seeking ---
if ( key === "ArrowRight" || key === "ArrowLeft" ) {
if ( appState . isPlaying ) {
playPauseBtn . click ( ) ;
}
let newFrame = appState . currentFrame ;
if ( key === "ArrowRight" ) {
newFrame = Math . min (
appState . vizData . radarFrames . length - 1 ,
appState . currentFrame + 1
) ;
} else if ( key === "ArrowLeft" ) {
newFrame = Math . max ( 0 , appState . currentFrame - 1 ) ;
}
if ( newFrame !== appState . currentFrame ) {
updateFrame ( newFrame , true ) ;
}
}
// --- Number keys for color modes ---
if ( key >= '1' && key <= '4' ) {
const colorToggles = [
toggleSnrColor ,
toggleClusterColor ,
toggleInlierColor ,
toggleStationaryColor ,
] ;
const toggleIndex = parseInt ( key ) - 1 ;
if ( colorToggles [ toggleIndex ] ) {
colorToggles [ toggleIndex ] . click ( ) ;
}
}
if ( key === "t" ) {
toggleTracks . click ( ) ;
}
if ( key === "d" ) {
toggleVelocity . click ( ) ;
}
if ( key === "c" ) {
toggleCloseUp . click ( ) ;
}
if ( key === "r" ) {
resetVisualization ( ) ;
}
if ( key === "p" ) {
togglePredictedPos . click ( ) ;
}
if ( key === "s" ) {
toggleSnrColor . click ( ) ;
}
if ( key === "a" ) {
toggleDebugOverlay . click ( ) ;
toggleDebug2Overlay . click ( ) ;
} }
} ) ; } ) ;
