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module toolbarsearch;


import qt.core.QSettings;
import qt.core.QUrl;

import qt.gui.QCompleter;
import qt.gui.QMenu;
import qt.gui.QStringListModel;

import QtWebKit.QWebSettings;

import searchlineedit;
import autosaver;


class ToolbarSearch : public SearchLineEdit
{
	mixin Signal!("search", QUrl /*url*/)

public:

	/*
	ToolbarSearch is a very basic search widget that also contains a small history.
	Searches are turned into urls that use Google to perform search
	*/
	this(QWidget parent = null)
	{
		super(parent)
		m_autosaver = new AutoSaver(this);
		m_maxSavedSearches = 10;
		m_stringListModel = new QStringListModel(this);

		QMenu m = menu();
		m.aboutToShow().connect(&this.aboutToShowMenu);
		m.triggered.connect(&this.triggeredMenuAction);

		QCompleter completer = new QCompleter(m_stringListModel, this);
		completer.setCompletionMode(QCompleter::InlineCompletion);
		lineEdit().setCompleter(completer);

		lineEdit().returnPressed.connect(&searchNow);
		setInactiveText(tr("Google"));
		load();
	}
	
	~this()
	{
		m_autosaver.saveIfNeccessary();
	}

public:

	void clear()
	{
		m_stringListModel.setStringList(QStringList());
		m_autosaver.changeOccurred();
	}

	void searchNow()
	{
		QString searchText = lineEdit().text();
		QStringList newList = m_stringListModel.stringList();
		if (newList.contains(searchText))
			newList.removeAt(newList.indexOf(searchText));
		newList.prepend(searchText);
		if (newList.size() >= m_maxSavedSearches)
			newList.removeLast();

		QWebSettings globalSettings = QWebSettings::globalSettings();
		if (!globalSettings.testAttribute(QWebSettings::PrivateBrowsingEnabled)) {
			m_stringListModel.setStringList(newList);
			m_autosaver.changeOccurred();
		}

		QUrl url(QLatin1String("http://www.google.com/search"));
		url.addQueryItem(QLatin1String("q"), searchText);
		url.addQueryItem(QLatin1String("ie"), QLatin1String("UTF-8"));
		url.addQueryItem(QLatin1String("oe"), QLatin1String("UTF-8"));
		url.addQueryItem(QLatin1String("client"), QLatin1String("qtdemobrowser"));
		emit search(url);
	}

private:

	void save()
	{
		QSettings settings;
		settings.beginGroup(QLatin1String("toolbarsearch"));
		settings.setValue(QLatin1String("recentSearches"), m_stringListModel.stringList());
		settings.setValue(QLatin1String("maximumSaved"), m_maxSavedSearches);
		settings.endGroup();
	}


	void aboutToShowMenu()
	{
		lineEdit().selectAll();
		QMenu m = menu();
		m.clear();
		QStringList list = m_stringListModel.stringList();
		if (list.isEmpty()) {
			m.addAction(tr("No Recent Searches"));
			return;
		}

		QAction recent = m.addAction(tr("Recent Searches"));
		recent.setEnabled(false);
		for (int i = 0; i < list.count(); ++i) {
			QString text = list.at(i);
			m.addAction(text).setData(text);
		}
		m.addSeparator();
		m.addAction(tr("Clear Recent Searches"), this, SLOT(clear()));
	}

	void triggeredMenuAction(QAction action)
	{
		QVariant v = action.data();
		if (v.canConvert<QString>()) {
			QString text = v.toString();
			lineEdit().setText(text);
			searchNow();
		}
	}

private:

	void load()
	{
		QSettings settings;
		settings.beginGroup(QLatin1String("toolbarsearch"));
		QStringList list = settings.value(QLatin1String("recentSearches")).toStringList();
		m_maxSavedSearches = settings.value(QLatin1String("maximumSaved"), m_maxSavedSearches).toInt();
		m_stringListModel.setStringList(list);
		settings.endGroup();
	}

	AutoSaver m_autosaver;
	int m_maxSavedSearches;
	QStringListModel m_stringListModel;
}