|  | @@ -5376,6 +5376,7 @@ return $8;
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				|  |  |  } else {
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				|  |  |  $7;
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				|  |  |  };
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				|  |  | +self._handleLossOfEnvironmentWithParent_(parent);
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				|  |  |  $9=$recv($recv(parentSmalltalkGlobals)._at_("Environment"))._new();
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				|  |  |  return $9;
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				|  |  |  //>>excludeStart("ctx", pragmas.excludeDebugContexts);
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				|  | @@ -5384,10 +5385,10 @@ return $9;
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				|  |  |  },
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				|  |  |  //>>excludeStart("ide", pragmas.excludeIdeData);
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				|  |  |  args: [],
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				|  |  | -source: "defaultEnvironment\x0a\x09\x22If helios is loaded from within a frame, answer the parent window environment\x22\x0a\x09\x0a\x09| parent parentSmalltalkGlobals |\x0a\x09\x0a\x09parent := window opener ifNil: [ window parent ].\x0a\x09parent ifNil: [ ^ Environment new ].\x0a\x09\x0a\x09[ parentSmalltalkGlobals := ((parent at: 'requirejs') value: 'amber/boot') at: 'globals' ]\x0a\x09on: Error do: [ parentSmalltalkGlobals := (parent at: 'requirejs') value: 'amber_vm/globals' ].\x0a\x09parentSmalltalkGlobals ifNil: [ ^ Environment new ].\x0a\x09\x0a\x09^ (parentSmalltalkGlobals at: 'Environment') new",
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				|  |  | +source: "defaultEnvironment\x0a\x09\x22If helios is loaded from within a frame, answer the parent window environment\x22\x0a\x09\x0a\x09| parent parentSmalltalkGlobals |\x0a\x09\x0a\x09parent := window opener ifNil: [ window parent ].\x0a\x09parent ifNil: [ ^ Environment new ].\x0a\x09\x0a\x09[ parentSmalltalkGlobals := ((parent at: 'requirejs') value: 'amber/boot') at: 'globals' ]\x0a\x09on: Error do: [ parentSmalltalkGlobals := (parent at: 'requirejs') value: 'amber_vm/globals' ].\x0a\x09parentSmalltalkGlobals ifNil: [ ^ Environment new ].\x0a\x09\x0a\x09self handleLossOfEnvironmentWithParent: parent.\x0a\x09\x0a\x09^ (parentSmalltalkGlobals at: 'Environment') new",
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				|  |  |  referencedClasses: ["Environment", "Error"],
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				|  |  |  //>>excludeEnd("ide");
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				|  |  | -messageSends: ["ifNil:", "opener", "parent", "new", "on:do:", "at:", "value:"]
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				|  |  | +messageSends: ["ifNil:", "opener", "parent", "new", "on:do:", "at:", "value:", "handleLossOfEnvironmentWithParent:"]
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				|  |  |  }),
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				|  |  |  $globals.HLManager);
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				|  |  |  
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				|  | @@ -5441,6 +5442,39 @@ messageSends: []
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				|  |  |  }),
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				|  |  |  $globals.HLManager);
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				|  |  |  
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				|  |  | +$core.addMethod(
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				|  |  | +$core.method({
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				|  |  | +selector: "handleLossOfEnvironmentWithParent:",
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				|  |  | +protocol: 'actions',
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				|  |  | +fn: function (parent){
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				|  |  | +var self=this;
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				|  |  | +//>>excludeStart("ctx", pragmas.excludeDebugContexts);
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				|  |  | +return $core.withContext(function($ctx1) {
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				|  |  | +//>>excludeEnd("ctx");
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				|  |  | +$recv(parent)._onunload_((function(){
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				|  |  | +//>>excludeStart("ctx", pragmas.excludeDebugContexts);
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				|  |  | +return $core.withContext(function($ctx2) {
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				|  |  | +//>>excludeEnd("ctx");
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				|  |  | +self._removeBeforeUnloadMessage();
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				|  |  | +return $recv(window)._close();
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				|  |  | +//>>excludeStart("ctx", pragmas.excludeDebugContexts);
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				|  |  | +}, function($ctx2) {$ctx2.fillBlock({},$ctx1,1)});
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				|  |  | +//>>excludeEnd("ctx");
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				|  |  | +}));
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				|  |  | +return self;
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				|  |  | +//>>excludeStart("ctx", pragmas.excludeDebugContexts);
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				|  |  | +}, function($ctx1) {$ctx1.fill(self,"handleLossOfEnvironmentWithParent:",{parent:parent},$globals.HLManager)});
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				|  |  | +//>>excludeEnd("ctx");
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				|  |  | +},
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				|  |  | +//>>excludeStart("ide", pragmas.excludeIdeData);
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				|  |  | +args: ["parent"],
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				|  |  | +source: "handleLossOfEnvironmentWithParent: parent\x0a\x09parent onunload: [ \x0a\x09\x09self removeBeforeUnloadMessage.\x0a\x09\x09window close ]",
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				|  |  | +referencedClasses: [],
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				|  |  | +//>>excludeEnd("ide");
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				|  |  | +messageSends: ["onunload:", "removeBeforeUnloadMessage", "close"]
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				|  |  | +}),
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				|  |  | +$globals.HLManager);
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				|  |  | +
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				|  |  |  $core.addMethod(
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				|  |  |  $core.method({
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				|  |  |  selector: "history",
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				|  | @@ -5750,6 +5784,30 @@ messageSends: ["removeActiveTab", "tabsWidget"]
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				|  |  |  }),
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				|  |  |  $globals.HLManager);
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				|  |  |  
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				|  |  | +$core.addMethod(
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				|  |  | +$core.method({
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				|  |  | +selector: "removeBeforeUnloadMessage",
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				|  |  | +protocol: 'actions',
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				|  |  | +fn: function (){
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				|  |  | +var self=this;
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				|  |  | +//>>excludeStart("ctx", pragmas.excludeDebugContexts);
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				|  |  | +return $core.withContext(function($ctx1) {
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				|  |  | +//>>excludeEnd("ctx");
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				|  |  | +window.onbeforeunload = null;
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				|  |  | +return self;
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				|  |  | +//>>excludeStart("ctx", pragmas.excludeDebugContexts);
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				|  |  | +}, function($ctx1) {$ctx1.fill(self,"removeBeforeUnloadMessage",{},$globals.HLManager)});
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				|  |  | +//>>excludeEnd("ctx");
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				|  |  | +},
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				|  |  | +//>>excludeStart("ide", pragmas.excludeIdeData);
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				|  |  | +args: [],
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				|  |  | +source: "removeBeforeUnloadMessage\x0a\x09<window.onbeforeunload = null>",
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				|  |  | +referencedClasses: [],
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				|  |  | +//>>excludeEnd("ide");
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				|  |  | +messageSends: []
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				|  |  | +}),
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				|  |  | +$globals.HLManager);
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				|  |  | +
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				|  |  |  $core.addMethod(
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				|  |  |  $core.method({
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				|  |  |  selector: "removeTabForWidget:",
 |