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87 lines
2.1 KiB
87 lines
2.1 KiB
#ifndef POPULARURLS_H
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#define POPULARURLS_H
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#include <tqobject.h>
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#include <kurl.h>
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#include <tqdict.h>
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#include <kdialogbase.h>
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// the class holds a list of most popular links in a dual data structure
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// * linked list, with head and tail: for fast append/prepend support
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// * dictionary that maps urls to list nodes: to save the need to iterate
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// over the list in order to find the correct node for each new url
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//
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// also, the class holds a maximum number of urls. two variables affect this:
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// * maxUrls - the num. of urls the user can see
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// * hardLimit - the actual number of urls kept.
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// when the number of urls reaches hardLimit, a garbage collection is done and
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// the bottom (hardLimit-maxUrls) entries are removed from the list
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typedef struct _UrlNode* UrlNodeP;
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typedef struct _UrlNode {
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UrlNodeP prev;
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KURL url;
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int rank;
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UrlNodeP next;
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} UrlNode;
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class PopularUrlsDlg;
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class PopularUrls : public TQObject {
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TQ_OBJECT
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public:
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PopularUrls(TQObject *parent = 0, const char *name = 0);
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~PopularUrls();
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void save();
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void load();
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void addUrl(const KURL& url);
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KURL::List getMostPopularUrls(int max);
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public slots:
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void showDialog();
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protected:
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// NOTE: the following methods append/insert/remove a node to the list
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// but NEVER free memory or allocate memory!
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void appendNode(UrlNodeP node);
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void insertNode(UrlNodeP node, UrlNodeP after);
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void removeNode(UrlNodeP node);
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void relocateIfNeeded(UrlNodeP node);
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void clearList();
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void dumpList();
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void decreaseRanks();
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private:
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UrlNodeP head, tail;
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TQDict<UrlNode> ranks; // actually holds UrlNode*
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int count;
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static const int maxUrls = 30;
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PopularUrlsDlg *dlg;
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};
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class TDEListView;
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class TDEListViewSearchLine;
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class PopularUrlsDlg: public KDialogBase {
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TQ_OBJECT
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public:
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PopularUrlsDlg();
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~PopularUrlsDlg();
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void run(KURL::List list); // use this to open the dialog
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inline int result() const { return selection; } // returns index 0 - topmost, or -1
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protected slots:
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void slotSearchReturnPressed(const TQString&);
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void slotItemSelected(TQListViewItem *it);
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private:
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TDEListView *urls;
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TDEListViewSearchLine *search;
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int selection;
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};
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#endif
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