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Check hash in viewer constructor.

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Fix #229
Fix #176
This commit is contained in:
Antoine Vandecreme 2013-10-12 18:30:05 -04:00
parent e006d0e05a
commit 4cd98a5da9
2 changed files with 11 additions and 1 deletions
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1
src/drawer.js
View File

@ -1160,6 +1160,7 @@ function drawTiles( drawer, lastDrawn ){
//$.console.log("Rendering collection tile %s | %s | %s", tile.y, tile.y, position); //$.console.log("Rendering collection tile %s | %s | %s", tile.y, tile.y, position);
if( tileSource ){ if( tileSource ){
drawer.collectionOverlays[ tileKey ] = viewer = new $.Viewer({ drawer.collectionOverlays[ tileKey ] = viewer = new $.Viewer({
hash: viewport.viewer.hash + "-" + tileKey,
element: $.makeNeutralElement( "div" ), element: $.makeNeutralElement( "div" ),
mouseNavEnabled: false, mouseNavEnabled: false,
showNavigator: false, showNavigator: false,

11
src/viewer.js
View File

@ -100,7 +100,7 @@ $.Viewer = function( options ) {
//internal state and dom identifiers //internal state and dom identifiers
id: options.id, id: options.id,
hash: options.id, hash: options.hash || options.id,
//dom nodes //dom nodes
element: null, element: null,
@ -147,6 +147,15 @@ $.Viewer = function( options ) {
}, $.DEFAULT_SETTINGS, options ); }, $.DEFAULT_SETTINGS, options );
if ( typeof( this.hash) === "undefined" ) {
throw new Error("A hash must be defined, either by specifying options.id or options.hash.");
}
if ( typeof( THIS[ this.hash ] ) !== "undefined" ) {
// We don't want to throw an error here, as the user might have discarded
// the previous viewer with the same hash and now want to recreate it.
$.console.warn("Hash " + this.hash + " has already been used.");
}
//Private state properties //Private state properties
THIS[ this.hash ] = { THIS[ this.hash ] = {
"fsBoundsDelta": new $.Point( 1, 1 ), "fsBoundsDelta": new $.Point( 1, 1 ),