SourceChanged signal in XmlListModel

mrbongdem

In my code :

XmlListModel {
id: feedModel

    source: "http://" + rootmaster.currentFeed
    query: "/rss/channel/item"
    XmlRole { name: "title"; query: "title/string()" }
    // Remove any links from the description
    XmlRole { name: "description"; query: "fn:replace(description/string(), '\&lt;a href=.*\/a\&gt;', '')" }
    onSourceChanged: {

     console.log("count change: ",count);
    }

}

When I click first time on any item my result is : qml: count change: 0. It's bad
But when I click any item after my result is : **qml: count change: 6 **. It's good
Can everybody explain for me ?
Thank you for your help !!!!

p3c0

Hi @mrbongdem
Which item are you clicking ? Perhaps you should use onCountChanged instead ?

mrbongdem

Hi @p3c0 ,
I tried onCountChanged and result is the same.
I don't know why ?
Thank for your replay.

p3c0

@mrbongdem Can you post a complete minimal example to test ?

mrbongdem

main.qml :

import QtQuick 2.4
import QtQuick.Controls 1.3
import QtQuick.Window 2.2
import QtQuick.Dialogs 1.2

ApplicationWindow {
    title: qsTr("Hello World")
    width: 640
    height: 480
    visible: true
    Main_Gui{

    }


}

Main_Gui.qml :

import QtQuick 2.0
import QtQuick.Window 2.1
import QtQuick.XmlListModel 2.0
import QtQuick.Layouts 1.0
import QtQuick.Window 2.1
import QtQuick.Controls 1.4
import QtQuick.Controls.Styles 1.4
import QtQuick.Dialogs 1.0
import QtQuick.Extras 1.4
Rectangle {
    id:rootmaster
    anchors.fill: parent
    color: "#161616"
    property string currentFeed
    RssFeeds { id: rssFeeds }
    XmlListModel {
        id: feedModel
        source: "http://" + rootmaster.currentFeed
        query: "/rss/channel/item"
        XmlRole { name: "title"; query: "title/string()" }
        // Remove any links from the description
        XmlRole { name: "description"; query: "fn:replace(description/string(), '\&lt;a href=.*\/a\&gt;', '')" }
        onSourceChanged: {
         console.log("count change: ",count);
         console.log("source change: ",source);
        }

    }

    StackView {
        id: stackView
        anchors.fill: rootmaster
        x:200
        y:100
        initialItem: ListView {
            model: rssFeeds
            delegate: Button{
                width: stackView.width
                height: rootmaster.height * 0.125
                text: title
                onClicked: {
                    if (stackView.depth == 1) {
                        currentFeed = feed;
                        feedModel.reload();
                    }
                }
            }
        }

    }
}

RssFeeds.qml :

import QtQuick 2.2
ListModel {
    ListElement { title: "xổ số Miền Nam"; feed: "xskt.com.vn/rss-feed/mien-nam-xsmn.rss";}
    ListElement { title: "xổ số Miền Trung"; feed: "xskt.com.vn/rss-feed/mien-trung-xsmt.rss";}
    ListElement { title: "xổ số Miền Bắc"; feed: "xskt.com.vn/rss-feed/mien-bac-xsmb.rss";}
    ListElement { title: "xổ số An Giang"; feed: "xskt.com.vn/rss-feed/an-giang-xsag.rss";}
    ListElement { title: "xổ số Bình Dương"; feed: "xskt.com.vn/rss-feed/binh-duong-xsbd.rss";}
    ListElement { title: "xổ số Bình Định"; feed: "xskt.com.vn/rss-feed/binh-dinh-xsbdi.rss";}
    ListElement { title: "xổ số Bạc Liêu"; feed: "xskt.com.vn/rss-feed/bac-lieu-xsbl.rss";}
    ListElement { title: "xổ số Bình Phước"; feed: "xskt.com.vn/rss-feed/binh-phuoc-xsbp.rss";}
    ListElement { title: "xổ số Bến Tre"; feed: "xskt.com.vn/rss-feed/ben-tre-xsbt.rss";}
}

Thank for your help !!

p3c0

@mrbongdem

onSourceChanged: { //<--- use onCountChanged here
         console.log("count change: ",count);
         console.log("source change: ",source);
        }

mrbongdem

Thank you @p3c0
I have tested it.

p3c0

@mrbongdem It should work because the handler will be called only when the count has changed and when called it will always print the updated count.