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// Copyright (c) 2012 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.
#include "chrome/browser/ui/webui/omnibox/omnibox_ui_handler.h"
#include <string>
#include "base/bind.h"
#include "base/string16.h"
#include "base/stringprintf.h"
#include "base/time.h"
#include "base/values.h"
#include "chrome/browser/autocomplete/autocomplete.h"
#include "chrome/browser/autocomplete/autocomplete_match.h"
#include "chrome/browser/search_engines/template_url.h"
#include "content/public/browser/web_ui.h"
OmniboxUIHandler::OmniboxUIHandler(Profile* profile ) {
controller_.reset(new AutocompleteController(profile, this));
}
OmniboxUIHandler::~OmniboxUIHandler() {}
void OmniboxUIHandler::RegisterMessages() {
web_ui()->RegisterMessageCallback("startOmniboxQuery",
base::Bind(&OmniboxUIHandler::StartOmniboxQuery,
base::Unretained(this)));
}
// This function gets called when the AutocompleteController possibly
// has new results. We package those results in a DictionaryValue
// object result_to_output and call the javascript function
// handleNewAutocompleteResult. Here's an example populated
// result_to_output object:
// {
// 'done': false,
// 'time_since_omnibox_started_ms': 15,
// 'combined_results' : {
// 'num_items': 4,
// 'item_0': {
// 'destination_url': 'http://mail.google.com',
// 'provider_name': 'HistoryURL',
// 'relevance': 1410,
// ...
// }
// 'item_1: {
// ...
// }
// ...
// }
// 'results_by_provider': {
// 'HistoryURL' : {
// 'num_items': 3,
// ...
// }
// 'Search' : {
// 'num_items': 1,
// ...
// }
// ...
// }
// }
// For reference, the javascript code that unpacks this object and
// displays it is in chrome/browser/resources/omnibox.js
void OmniboxUIHandler::OnResultChanged(bool default_match_changed) {
base::DictionaryValue result_to_output;
// Fill in general information.
result_to_output.SetBoolean("done", controller_->done());
result_to_output.SetInteger("time_since_omnibox_started_ms",
(base::Time::Now() - time_omnibox_started_).InMilliseconds());
// Fill in the merged/combined results the controller has provided.
AddResultToDictionary("combined_results", controller_->result().begin(),
controller_->result().end(), &result_to_output);
// Fill results from each individual provider as well.
for (ACProviders::const_iterator it(controller_->providers()->begin());
it != controller_->providers()->end(); ++it) {
AddResultToDictionary(std::string("results_by_provider.") + (*it)->name(),
(*it)->matches().begin(), (*it)->matches().end(), &result_to_output);
}
// Add done; send the results.
web_ui()->CallJavascriptFunction("omniboxDebug.handleNewAutocompleteResult",
result_to_output);
}
// For details on the format of the DictionaryValue that this function
// populates, see the comments by OnResultChanged().
void OmniboxUIHandler::AddResultToDictionary(const std::string& prefix,
ACMatches::const_iterator it,
ACMatches::const_iterator end,
base::DictionaryValue* output) {
int i = 0;
for (; it != end; ++it, ++i) {
std::string item_prefix(prefix + StringPrintf(".item_%d", i));
if (it->provider != NULL) {
output->SetString(item_prefix + ".provider_name", it->provider->name());
output->SetBoolean(item_prefix + ".provider_done", it->provider->done());
}
output->SetInteger(item_prefix + ".relevance", it->relevance);
output->SetBoolean(item_prefix + ".deletable", it->deletable);
output->SetString(item_prefix + ".fill_into_edit", it->fill_into_edit);
output->SetInteger(item_prefix + ".inline_autocomplete_offset",
it->inline_autocomplete_offset);
output->SetString(item_prefix + ".destination_url",
it->destination_url.spec());
output->SetString(item_prefix + ".contents", it->contents);
// At this time, we're not bothering to send along the long vector that
// represent contents classification. i.e., for each character, what
// type of text it is.
output->SetString(item_prefix + ".description", it->description);
// At this time, we're not bothering to send along the long vector that
// represents description classification. i.e., for each character, what
// type of text it is.
output->SetInteger(item_prefix + ".transition", it->transition);
output->SetBoolean(item_prefix + ".is_history_what_you_typed_match",
it->is_history_what_you_typed_match);
output->SetString(item_prefix + ".type",
AutocompleteMatch::TypeToString(it->type));
output->SetString(item_prefix + ".keyword", it->keyword);
output->SetBoolean(item_prefix + ".starred", it->starred);
output->SetBoolean(item_prefix + ".from_previous", it->from_previous);
}
output->SetInteger(prefix + ".num_items", i);
}
void OmniboxUIHandler::StartOmniboxQuery(
const base::ListValue* one_element_input_string) {
string16 input_string = ExtractStringValue(one_element_input_string);
string16 empty_string;
// Tell the autocomplete controller to start working on the
// input. It's okay if the previous request hasn't yet finished;
// the autocomplete controller is smart enough to stop the previous
// query before it starts the new one. By the way, in this call to
// Start(), we use the default/typical values for all parameters.
time_omnibox_started_ = base::Time::Now();
controller_->Start(input_string,
empty_string, // user's desired tld (top-level domain)
false, // don't prevent inline autocompletion
false, // no preferred keyword provider
true, // allow exact keyword matches
AutocompleteInput::ALL_MATCHES); // want all matches
}
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