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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
'use strict';
/**
* @fileoverview Displays an analysis of the selection.
*/
base.requireStylesheet('tracing.analysis.analysis_view');
base.require('base.guid');
base.require('tracing.analysis.analysis_results');
base.require('tracing.analysis.analyze_selection');
base.require('tracing.analysis.default_object_view');
base.require('tracing.analysis.object_instance_view');
base.require('tracing.analysis.object_snapshot_view');
base.require('tracing.analysis.slice_view');
base.require('tracing.analysis.util');
base.require('ui');
base.exportTo('tracing.analysis', function() {
var AnalysisView = ui.define('div');
AnalysisView.prototype = {
__proto__: HTMLDivElement.prototype,
decorate: function() {
this.className = 'analysis-view';
this.currentView_ = undefined;
this.currentSelection_ = undefined;
this.selections_ = [];
this.guid_ = base.GUID.allocate();
window.addEventListener('popstate', this.onPopState.bind(this));
},
changeViewType: function(viewType) {
if (this.currentView_ instanceof viewType)
return;
this.textContent = '';
try {
this.currentView_ = new viewType();
this.appendChild(this.currentView_);
} catch (e) {
this.currentView_ = undefined;
throw e;
}
this.updateClassList_();
},
updateClassList_: function() {
if (this.currentView_ instanceof tracing.analysis.AnalysisResults)
this.classList.remove('viewing-old-style-analysis');
else
this.classList.add('viewing-old-style-analysis');
if (this.currentView_ &&
this.currentView_.requiresTallView) {
this.classList.add('tall-mode');
} else {
this.classList.remove('tall-mode');
}
},
get currentView() {
return this.currentView_;
},
get selection() {
return this.currentSelection_;
},
set selection(selection) {
this.selections_.push(selection);
var state = {
view_guid: this.guid_,
selection_guid: selection.guid
};
window.history.pushState(state);
this.processSelection(selection);
},
clearSelectionHistory: function() {
this.selections_ = [];
},
onPopState: function(event) {
if ((event.state === null) ||
(event.state.view_guid !== this.guid_))
return;
var idx;
for (idx = 0; idx < this.selections_.length; ++idx) {
if (this.selections_[idx].guid === event.state.selection_guid)
break;
}
if (idx >= this.selections_.length)
return;
this.processSelection(this.selections_[idx]);
event.stopPropagation();
},
processSelection: function(selection) {
var eventsByType = selection.getEventsOrganizedByType();
if (selection.length == 1 &&
eventsByType.counterSamples.length == 0) {
if (this.tryToProcessSelectionUsingCustomView(selection[0]))
return;
}
this.changeViewType(tracing.analysis.AnalysisResults);
this.currentView.clear();
this.currentSelection_ = selection;
tracing.analysis.analyzeEventsByType(this.currentView, eventsByType);
},
tryToProcessSelectionUsingCustomView: function(event) {
var obj;
var typeName;
var viewBaseType;
var defaultViewType;
var viewProperty;
if (event instanceof tracing.trace_model.ObjectSnapshot) {
typeName = event.objectInstance.typeName;
viewBaseType = tracing.analysis.ObjectSnapshotView;
defaultViewType = tracing.analysis.DefaultObjectSnapshotView;
} else if (event instanceof tracing.trace_model.ObjectInstance) {
typeName = event.typeName;
viewBaseType = tracing.analysis.ObjectInstanceView;
defaultViewType = tracing.analysis.DefaultObjectInstanceView;
} else if (event instanceof tracing.trace_model.Slice) {
typeName = event.analysisTypeName;
viewBaseType = tracing.analysis.SliceView;
defaultViewType = undefined;
} else {
return false;
}
var customViewInfo = viewBaseType.getViewInfo(typeName);
var viewType = customViewInfo ?
customViewInfo.constructor : defaultViewType;
// Some view types don't have default views. In those cases, we fall
// back to the standard analysis sytem.
if (!viewType)
return false;
this.changeViewType(viewType);
this.currentView.modelEvent = event;
return true;
}
};
return {
AnalysisView: AnalysisView
};
});
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