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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 <tdelistview.h>
00032 #include <tdelocale.h>
00033
00034 #include <tqlayout.h>
00035 #include <tqmap.h>
00036 #include <tqwidget.h>
00037
00038 namespace Akregator
00039 {
00040
00041 class SelectNodeDialog::SelectNodeDialogPrivate
00042 {
00043 public:
00044 SimpleNodeSelector* widget;
00045 };
00046
00047 SelectNodeDialog::SelectNodeDialog(FeedList* feedList, TQWidget* 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, TQT_SIGNAL(signalNodeSelected(TreeNode*)), this, TQT_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 TDEListView* view;
00085 FeedList* list;
00086 NodeVisitor* visitor;
00087 TQMap<TreeNode*,TQListViewItem*> nodeToItem;
00088 TQMap<TQListViewItem*, TreeNode*> itemToNode;
00089 };
00090
00091 class SimpleNodeSelector::NodeVisitor : public TreeNodeVisitor
00092 {
00093 public:
00094
00095 NodeVisitor(SimpleNodeSelector* view) : TreeNodeVisitor(), m_view(view) {}
00096 virtual ~NodeVisitor() {}
00097
00098 void createItems(TreeNode* node)
00099 {
00100 node->accept(this);
00101 }
00102
00103 virtual bool visitFolder(Folder* node)
00104 {
00105 visitTreeNode(node);
00106 TQValueList<TreeNode*> children = node->children();
00107 m_view->d->nodeToItem[node]->setExpandable(true);
00108 for (TQValueList<TreeNode*>::ConstIterator it = children.begin(); it != children.end(); ++it)
00109 createItems(*it);
00110 return true;
00111 }
00112
00113 virtual bool visitTreeNode(TreeNode* node)
00114 {
00115 TQListViewItem* pi = node->parent() ? m_view->d->nodeToItem[node->parent()] : 0;
00116
00117 TDEListViewItem* item = 0;
00118 if (pi != 0)
00119 item = new TDEListViewItem(pi, node->title());
00120 else
00121 item = new TDEListViewItem(m_view->d->view, node->title());
00122 item->setExpandable(false);
00123 m_view->d->nodeToItem.insert(node, item);
00124 m_view->d->itemToNode.insert(item, node);
00125 connect(node, TQT_SIGNAL(signalDestroyed(TreeNode*)), m_view, TQT_SLOT(slotNodeDestroyed(TreeNode*)));
00126 return true;
00127 }
00128
00129 private:
00130
00131 SimpleNodeSelector* m_view;
00132 };
00133
00134
00135 SimpleNodeSelector::SimpleNodeSelector(FeedList* feedList, TQWidget* parent, const char* name) : TQWidget(parent, name), d(new SimpleNodeSelectorPrivate)
00136 {
00137 d->list = feedList;
00138 connect(feedList, TQT_SIGNAL(signalDestroyed(FeedList*)), this, TQT_SLOT(slotFeedListDestroyed(FeedList*)));
00139
00140 d->view = new TDEListView(this);
00141 d->view->setRootIsDecorated(true);
00142 d->view->addColumn(i18n("Feeds"));
00143
00144 connect(d->view, TQT_SIGNAL(selectionChanged(TQListViewItem*)), this, TQT_SLOT(slotItemSelected(TQListViewItem*)));
00145
00146 TQGridLayout* layout = new TQGridLayout(this, 1, 1);
00147 layout->addWidget(d->view, 0, 0);
00148
00149 d->visitor = new NodeVisitor(this);
00150
00151 d->visitor->createItems(d->list->rootNode());
00152 d->nodeToItem[d->list->rootNode()]->setOpen(true);
00153 d->view->ensureItemVisible(d->nodeToItem[d->list->rootNode()]);
00154 }
00155
00156 SimpleNodeSelector::~SimpleNodeSelector()
00157 {
00158 delete d->visitor;
00159 delete d;
00160 d = 0;
00161 }
00162
00163 TreeNode* SimpleNodeSelector::selectedNode() const
00164 {
00165 return d->itemToNode[d->view->selectedItem()];
00166 }
00167
00168 void SimpleNodeSelector::slotSelectNode(TreeNode* node)
00169 {
00170 TQListViewItem* item = d->nodeToItem[node];
00171 if (item != 0)
00172 d->view->setSelected(item, true);
00173 }
00174
00175 void SimpleNodeSelector::slotFeedListDestroyed(FeedList* )
00176 {
00177 d->nodeToItem.clear();
00178 d->itemToNode.clear();
00179 d->view->clear();
00180 }
00181
00182 void SimpleNodeSelector::slotItemSelected(TQListViewItem* item)
00183 {
00184 emit signalNodeSelected(d->itemToNode[item]);
00185 }
00186
00187 void SimpleNodeSelector::slotNodeDestroyed(TreeNode* node)
00188 {
00189 if (d->nodeToItem.contains(node))
00190 {
00191 TQListViewItem* item = d->nodeToItem[node];
00192 d->nodeToItem.remove(node);
00193 d->itemToNode.remove(item);
00194 delete item;
00195 }
00196 }
00197
00198 }
00199
00200 #include "simplenodeselector.moc"
00201