Search and select item in QTreeWidget based on Search String

[MostafaEzzat]

@mrjj

Hi ,

I Already have this function about QLineEndit to write in the LineEdit then search in TreeWidget

void Profile3::on_lineEdit_textEdited(const QString &arg1)
{
    QList<QTreeWidgetItem*> clist = ui->treeWidget_Medicine->findItems(arg1, Qt::MatchContains|Qt::MatchRecursive, 0);

  // QItemSelectionModel <QTreeWidgetItem*> select;
    for(QTreeWidgetItem* item: clist)
    {

    //    select->setCurrentIndex(select,Qt::MatchContains|Qt::MatchRecursive);
        ui->treeWidget_Medicine->setCurrentItem(item,0);
        item->setBackground(0,Qt::red) ;
         qDebug() << endl <<  item->text(0) << "Medicine"  ;
    }

}

but it went this , so i just need to tell me about QItemSelectionModel that how to use with TreeWidget to select multiple chocies even if i made the loop to clear highlight

[mrjj]

Hi
So it colored all items ???

[MostafaEzzat]

@mrjj

Yes it colored all the items after i delete and rewrite in QLineEdit so i guess as you said it needs also for loop to delete the highlight but i guess it will not be elegent i just need multiple selection like (I mean the way of selection) of

•     ui->treeWidget_Medicine->setCurrentItem(item,0);
  

that when i search for something highlight the normal like

• setCurrentItem

Thanks in Advance appreciate

[mrjj]

@MostafaEzzat
Hi
Ah yes if you dont clear the background before each search that will happen.

Im not sure how we can do when its a TreeWidget as the function we need is protected

https://doc.qt.io/qt-5/qtreewidget.html#indexFromItem

so we could do

      auto sel = ui->treeWidget->selectionModel();
      for(QTreeWidgetItem* item: clist)
      {
       QModelIndex index = ui->treeWidget->indexFromItem(item,0);
       sel->select(index) ;
      }

So you would need to subclass your TreeWidget to do this.

[MostafaEzzat]

@mrjj

I inherted QTreeWidget like this and still gives me it's protected or do you think i should rewrite QModel Index file to inhert QTreeWidgetItem in it

class Profile3 : public QWidget , public QTreeWidgetItem , public QModelIndex
{

• D:\New folder\Hospitaal\profile3.cpp:360: error: 'QModelIndex QTreeWidget::indexFromItem(QTreeWidgetItem*, int) const' is protected within this context

• ..\Hospitaal\profile3.cpp: In member function 'void Profile3::on_lineEdit_textEdited(const QString&)':

• ..\Hospitaal\profile3.cpp:360:71: error: 'QModelIndex QTreeWidget::indexFromItem(QTreeWidgetItem*, int) const' is protected within this context

•   QModelIndex index = ui->treeWidget_Medicine->indexFromItem(item,0);
  

• D:\New folder\Hospitaal\profile3.cpp:361: error: no matching function for call to 'QItemSelectionModel::select(QModelIndex&)'

• ..\Hospitaal\profile3.cpp:361:23: error: no matching function for call to 'QItemSelectionModel::select(QModelIndex&)'

•   sel->select(index) ;
  

[mrjj]

@MostafaEzzat
Hi
Ehh that is nothing like I expected. o.O

You need a subclassed TreeWidget like code below
and use that instead of the standard one.

class MyTreeWidget : public QTreeWidget
{
    Q_OBJECT
public:
    explicit MyTreeWidget(QWidget *parent = nullptr) : QTreeWidget(parent)
    {

    }

    void DoSearch(QString term) {

        QList<QTreeWidgetItem *> clist = findItems(term,Qt::MatchContains | Qt::MatchRecursive, 0);

        auto sel = selectionModel();
        for (QTreeWidgetItem *item : clist) {
            QModelIndex index = indexFromItem(item, 0);
            sel->select(index,  QItemSelectionModel::Select) ;
        }

    }

};

and use your new DoSearch

ui->treeWidget->selectionModel()->clear(); // get rid of old selection
ui->treeWidget->DoSearch(ui->lineEdit->text());

Then it will select them

Test Project
https://www.dropbox.com/s/zu5tc2hobdwt56i/justDefualt.zip?dl=0

Do note. I used the promotion feature of Creator to replace the normal one with my subclassed one.
That is why you dont see code that goes
MyTreeWidget * tree = new MyTreeWidget(this);
To insert into main form.

[MostafaEzzat]

This post is deleted!

[MostafaEzzat]

This post is deleted!

[MostafaEzzat]

@mrjj

Thanks i got it after a while , it works very well

Appreciated

[mrjj]

@MostafaEzzat
Good to hear :)

[John H. BROOKS]

Please Sir, it's almost a month I'm trying to know how to return a big text (10MB) in QTextWidget or in any suitable widget you would suject
(I'm trying to work on a similar project like esword, see here link text)

[JonB]

@John-H-BROOKS
Hello and welcome.

Open your own new thread with your question, it is different from this topic. Describe what you are trying to do and what the issues are.

[OdinUci]

@Jmrjj please how can I make a filter to a tree