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Diffstat (limited to 'kdeui/klistviewsearchline.h')
| -rw-r--r-- | kdeui/klistviewsearchline.h | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/kdeui/klistviewsearchline.h b/kdeui/klistviewsearchline.h new file mode 100644 index 000000000..e8f5e9e2a --- /dev/null +++ b/kdeui/klistviewsearchline.h @@ -0,0 +1,264 @@ +/* This file is part of the KDE libraries + Copyright (c) 2003 Scott Wheeler <wheeler@kde.org> + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License version 2 as published by the Free Software Foundation. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. +*/ + +#ifndef KLISTVIEWSEARCHLINE_H +#define KLISTVIEWSEARCHLINE_H + +#include <klineedit.h> +#include <qhbox.h> + +class KListView; +class QListViewItem; +class QToolButton; + +/** + * This class makes it easy to add a search line for filtering the items in a + * listview based on a simple text search. + * + * No changes to the application other than instantiating this class with an + * appropriate KListView should be needed. + * + * If you want the clear button and the search label, you should take a look at + * the KListViewSearchLineWidget + * + * @note { When iterating over items in the KListView, make sure that + * the iterator only includes visible items (for example, by adding + * QListViewItemIterator::Visible to the iterator flags). Otherwise, + * actions (such as deletion) may be taken on items that have been + * hidden by the search function. } + * @since 3.3 + */ + +class KDEUI_EXPORT KListViewSearchLine : public KLineEdit +{ + Q_OBJECT + +public: + + /** + * Constructs a KListViewSearchLine with \a listView being the KListView to + * be filtered. + * + * If \a listView is null then the widget will be disabled until a listview + * is set with setListView(). + */ + KListViewSearchLine(QWidget *parent = 0, KListView *listView = 0, const char *name = 0); + + /** + * Constructs a KListViewSearchLine without any KListView to filter. The + * KListView object has to be set later with setListView(). + */ + KListViewSearchLine(QWidget *parent, const char *name); + + /** + * Destroys the KListViewSearchLine. + */ + virtual ~KListViewSearchLine(); + + /** + * Returns true if the search is case sensitive. This defaults to false. + * + * @see setCaseSensitive() + */ + bool caseSensitive() const; + + /** + * Returns the current list of columns that will be searched. If the + * returned list is empty all visible columns will be searched. + * + * @see setSearchColumns + */ + QValueList<int> searchColumns() const; + + /** + * If this is true (the default) then the parents of matched items will also + * be shown. + * + * @see setKeepParentsVisible() + */ + bool keepParentsVisible() const; + + /** + * Returns the listview that is currently filtered by the search. + * + * @see setListView() + */ + KListView *listView() const; + +public slots: + /** + * Updates search to only make visible the items that match \a s. If + * \a s is null then the line edit's text will be used. + */ + virtual void updateSearch(const QString &s = QString::null); + + /** + * Make the search case sensitive or case insensitive. + * + * @see caseSenstive() + */ + void setCaseSensitive(bool cs); + + /** + * When a search is active on a list that's organized into a tree view if + * a parent or ancesestor of an item is does not match the search then it + * will be hidden and as such so too will any children that match. + * + * If this is set to true (the default) then the parents of matching items + * will be shown. + * + * @see keepParentsVisible + */ + void setKeepParentsVisible(bool v); + + /** + * Sets the list of columns to be searched. The default is to search all, + * visible columns which can be restored by passing \a columns as an empty + * list. + * + * @see searchColumns + */ + void setSearchColumns(const QValueList<int> &columns); + + /** + * Sets the KListView that is filtered by this search line. If \a lv is null + * then the widget will be disabled. + * + * @see listView() + */ + void setListView(KListView *lv); + +protected: + + /** + * Returns true if \a item matches the search \a s. This will be evaluated + * based on the value of caseSensitive(). This can be overridden in + * subclasses to implement more complicated matching schemes. + */ + virtual bool itemMatches(const QListViewItem *item, const QString &s) const; + + /** + * Re-implemented for internal reasons. API not affected. + * + * See QLineEdit::mousePressEvent(). + */ + virtual QPopupMenu *createPopupMenu(); + +protected slots: + /** + * When keys are pressed a new search string is created and a timer is + * activated. The most recent search is activated when this timer runs out + * if another key has not yet been pressed. + * + * This method makes @param search the most recent search and starts the + * timer. + * + * Together with activateSearch() this makes it such that searches are not + * started until there is a short break in the users typing. + * + * @see activateSearch() + */ + void queueSearch(const QString &search); + + /** + * When the timer started with queueSearch() expires this slot is called. + * If there has been another timer started then this slot does nothing. + * However if there are no other pending searches this starts the list view + * search. + * + * @see queueSearch() + */ + void activateSearch(); + +private: + + /** + * This is used in case parent items of matching items shouldn't be + * visible. It hides all items that don't match the search string. + */ + void checkItemParentsNotVisible(); + + /** + * This is used in case parent items of matching items should be visible. + * It makes a recursive call to all children. It returns true if at least + * one item in the subtree with the given root item is visible. + */ + bool checkItemParentsVisible(QListViewItem *item, QListViewItem *highestHiddenParent = 0); + +private slots: + void itemAdded(QListViewItem *item) const; + void listViewDeleted(); + void searchColumnsMenuActivated(int); + +private: + class KListViewSearchLinePrivate; + KListViewSearchLinePrivate *d; +}; + +/** + * Creates a widget featuring a KListViewSearchLine, a label with the text + * "Search" and a button to clear the search. + * + * @since 3.4 + */ +class KDEUI_EXPORT KListViewSearchLineWidget : public QHBox +{ + Q_OBJECT + +public: + /** + * Creates a KListViewSearchLineWidget for \a listView with \a parent as the + * parent with and \a name. + */ + KListViewSearchLineWidget(KListView *listView = 0, QWidget *parent = 0, + const char *name = 0); + + /** + * Destroys the KListViewSearchLineWidget + */ + ~KListViewSearchLineWidget(); + + /** + * Creates the search line. This can be useful to reimplement in cases where + * a KListViewSearchLine subclass is used. + */ + virtual KListViewSearchLine *createSearchLine(KListView *listView); + + /** + * Returns a pointer to the search line. + */ + KListViewSearchLine *searchLine() const; + +protected slots: + /** + * Creates the widgets inside of the widget. This is called from the + * constructor via a single shot timer so that it it guaranteed to run + * after construction is complete. This makes it suitable for overriding in + * subclasses. + */ + virtual void createWidgets(); + +private slots: + void positionInToolBar(); + +private: + class KListViewSearchLineWidgetPrivate; + KListViewSearchLineWidgetPrivate *d; +}; + +#endif |