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00025 #include "feedlist.h"
00026 #include "folder.h"
00027 #include "simplenodeselector.h"
00028 #include "treenode.h"
00029 #include "treenodevisitor.h"
00030
00031 #include <klistview.h>
00032 #include <klocale.h>
00033
00034 #include <qlayout.h>
00035 #include <qmap.h>
00036 #include <qwidget.h>
00037
00038 namespace Akregator
00039 {
00040
00041 class SelectNodeDialog::SelectNodeDialogPrivate
00042 {
00043 public:
00044 SimpleNodeSelector* widget;
00045 };
00046
00047 SelectNodeDialog::SelectNodeDialog(FeedList* feedList, QWidget* parent, char* name) :
00048 KDialogBase(parent, name, true, i18n("Select Feed or Folder"),
00049 KDialogBase::Ok|KDialogBase::Cancel, KDialogBase::Ok, true), d(new SelectNodeDialogPrivate)
00050 {
00051 d->widget = new SimpleNodeSelector(feedList, this);
00052
00053 connect(d->widget, SIGNAL(signalNodeSelected(TreeNode*)), this, SLOT(slotNodeSelected(TreeNode*)));
00054
00055 setMainWidget(d->widget);
00056 enableButtonOK(false);
00057 }
00058
00059 SelectNodeDialog::~SelectNodeDialog()
00060 {
00061 delete d;
00062 d = 0;
00063 }
00064
00065 TreeNode* SelectNodeDialog::selectedNode() const
00066 {
00067 return d->widget->selectedNode();
00068 }
00069
00070 void SelectNodeDialog::slotSelectNode(TreeNode* node)
00071 {
00072 d->widget->slotSelectNode(node);
00073 }
00074
00075 void SelectNodeDialog::slotNodeSelected(TreeNode* node)
00076 {
00077 enableButtonOK(node != 0);
00078 }
00079
00080
00081 class SimpleNodeSelector::SimpleNodeSelectorPrivate
00082 {
00083 public:
00084 KListView* view;
00085 FeedList* list;
00086 NodeVisitor* visitor;
00087 QMap<TreeNode*,QListViewItem*> nodeToItem;
00088 QMap<QListViewItem*, TreeNode*> itemToNode;
00089 };
00090
00091 class SimpleNodeSelector::NodeVisitor : public TreeNodeVisitor
00092 {
00093 public:
00094
00095 NodeVisitor(SimpleNodeSelector* view) : TreeNodeVisitor(), m_view(view) {}
00096
00097 void createItems(TreeNode* node)
00098 {
00099 node->accept(this);
00100 }
00101
00102 virtual bool visitFolder(Folder* node)
00103 {
00104 visitTreeNode(node);
00105 QValueList<TreeNode*> children = node->children();
00106 m_view->d->nodeToItem[node]->setExpandable(true);
00107 for (QValueList<TreeNode*>::ConstIterator it = children.begin(); it != children.end(); ++it)
00108 createItems(*it);
00109 return true;
00110 }
00111
00112 virtual bool visitTreeNode(TreeNode* node)
00113 {
00114 QListViewItem* pi = node->parent() ? m_view->d->nodeToItem[node->parent()] : 0;
00115
00116 KListViewItem* item = 0;
00117 if (pi != 0)
00118 item = new KListViewItem(pi, node->title());
00119 else
00120 item = new KListViewItem(m_view->d->view, node->title());
00121 item->setExpandable(false);
00122 m_view->d->nodeToItem.insert(node, item);
00123 m_view->d->itemToNode.insert(item, node);
00124 connect(node, SIGNAL(signalDestroyed(TreeNode*)), m_view, SLOT(slotNodeDestroyed(TreeNode*)));
00125 return true;
00126 }
00127
00128 private:
00129
00130 SimpleNodeSelector* m_view;
00131 };
00132
00133
00134 SimpleNodeSelector::SimpleNodeSelector(FeedList* feedList, QWidget* parent, const char* name) : QWidget(parent, name), d(new SimpleNodeSelectorPrivate)
00135 {
00136 d->list = feedList;
00137 connect(feedList, SIGNAL(signalDestroyed(FeedList*)), this, SLOT(slotFeedListDestroyed(FeedList*)));
00138
00139 d->view = new KListView(this);
00140 d->view->setRootIsDecorated(true);
00141 d->view->addColumn(i18n("Feeds"));
00142
00143 connect(d->view, SIGNAL(selectionChanged(QListViewItem*)), this, SLOT(slotItemSelected(QListViewItem*)));
00144
00145 QGridLayout* layout = new QGridLayout(this, 1, 1);
00146 layout->addWidget(d->view, 0, 0);
00147
00148 d->visitor = new NodeVisitor(this);
00149
00150 d->visitor->createItems(d->list->rootNode());
00151 d->nodeToItem[d->list->rootNode()]->setOpen(true);
00152 d->view->ensureItemVisible(d->nodeToItem[d->list->rootNode()]);
00153 }
00154
00155 SimpleNodeSelector::~SimpleNodeSelector()
00156 {
00157 delete d->visitor;
00158 delete d;
00159 d = 0;
00160 }
00161
00162 TreeNode* SimpleNodeSelector::selectedNode() const
00163 {
00164 return d->itemToNode[d->view->selectedItem()];
00165 }
00166
00167 void SimpleNodeSelector::slotSelectNode(TreeNode* node)
00168 {
00169 QListViewItem* item = d->nodeToItem[node];
00170 if (item != 0)
00171 d->view->setSelected(item, true);
00172 }
00173
00174 void SimpleNodeSelector::slotFeedListDestroyed(FeedList* )
00175 {
00176 d->nodeToItem.clear();
00177 d->itemToNode.clear();
00178 d->view->clear();
00179 }
00180
00181 void SimpleNodeSelector::slotItemSelected(QListViewItem* item)
00182 {
00183 emit signalNodeSelected(d->itemToNode[item]);
00184 }
00185
00186 void SimpleNodeSelector::slotNodeDestroyed(TreeNode* node)
00187 {
00188 if (d->nodeToItem.contains(node))
00189 {
00190 QListViewItem* item = d->nodeToItem[node];
00191 d->nodeToItem.remove(node);
00192 d->itemToNode.remove(item);
00193 delete item;
00194 }
00195 }
00196
00197 }
00198
00199 #include "simplenodeselector.moc"
00200