Friendiqa/v0.001/source-android/qml/NewsTab.qml

import QtQuick 2.0
import QtQuick.Dialogs 1.2
import QtQuick.Controls 1.2
import QtQuick.LocalStorage 2.0 as Sql
import "qrc:/js/news.js" as Newsjs
import "qrc:/js/helper.js" as Helperjs

Item {
   property string newstabStatus:"news"

    function showNews(newsToShow){
       newsBusy.running=false;
       var currentTime= new Date();
       var msg = {'currentTime': currentTime, 'model': newsModel,'news':newsToShow};
       newsWorker.sendMessage(msg);
    }

    function onFriendsMessages(friend){print(" Friend "+friend);
       newstabStatus="friendmessage";
       Newsjs.newsfromdb(db,root.login.username, function(dbnews){showNews(dbnews)},friend)
    }

    function onDirectMessage(friend){
        newsStack.push({item:"qrc:/qml/MessageSend.qml",properties:{"reply_to_user": friend,"directmessage":1,"login":root.login}});
    }

   function  cleanNews(database){
        var db=Sql.LocalStorage.openDatabaseSync(database[0],database[1],database[2],database[3]);
         db.transaction( function(tx) {
                var maxnewsrs = tx.executeSql("SELECT DISTINCT maxnews FROM config");
                var maxnews=maxnewsrs.rows.item(0);
                var newscountrs = tx.executeSql('SELECT COUNT(*) from news');
                var newscount = newscountrs.rows.item(0);
                if (newscount>maxnews){var lastvalidtimers= tx.executeSql('select created_at from news ORDER BY created_at DESC LIMIT ' +(newscount-maxnews));
                    var lastvalidtime=lastvalidtimers.rows.item(-1);
                    var deleters = tx.executeSql('DELETE from news WHERE created_at<'+lastvalidtime)}
        });
        Qt.quit()
    }

   StackView{
   id: newsStack
   anchors.fill:parent
   focus: true 
   Keys.onReleased: if (event.key === Qt.Key_Back && stackView.depth > 1) {
                        stackView.pop(); event.accepted = true;
                    }
   initialItem:Rectangle {
        color: "white"
        width:root.width-2*mm
        height:root.height-8*mm

        Button {
            id: newMessageButton
            text: qsTr("+")
            anchors.top: parent.top
            anchors.right: parent.right
            onClicked: {
               Helperjs.readField("screen_name",root.db,"contacts",root.login.username,function(friends){
                   newsStack.push({item:"qrc:/qml/MessageSend.qml",properties:{"contacts": friends,"login":root.login}})
               },"isFriend",1);
            }
        }
        Button {
            id: quitButton
            text: qsTr("Quit")
            anchors.top: parent.top
            anchors.right: newMessageButton.left
            onClicked: {cleanNews(root.db)}
        }

        Component {  id:footerComponent
            Rectangle{
                border.color: "#EEEEEE"
                border.width: 1
                 width:parent.width
                 height:6*mm
                 Text{
                     font.pixelSize: 1.5*mm
                     anchors.centerIn: parent
                    text:qsTr("More")
                 }
                 MouseArea{anchors.fill:parent
                     onClicked:{
                      var currentTime= new Date();
                      if(newstabStatus=="news"){
                            var lastnews_id=newsModel.get(newsModel.count-1).newsitemobject.created_at;
                            Newsjs.newsfromdb(root.db,root.login.username, function(news){
                          var msg = {'currentTime': currentTime, 'model': newsModel,'news':news,'appendnews':true};
                          newsWorker.sendMessage(msg);
                          },false,lastnews_id)}
                      else if(newstabStatus=="friendmessage"){
                          Newsjs.newsfromdb(root.db,root.login.username, function(news){
                            var msg = {'currentTime': currentTime, 'model': newsModel,'news':news,'appendnews':true};
                            newsWorker.sendMessage(msg);
                            },newsModel.get(newsModel.count-1).newsitemobject.uid,newsModel.get(newsModel.count-1).newsitemobject.created_at)}
                      }}
                  }
        }
        ListView {
          id: newsView
          anchors.fill: parent
          anchors.topMargin: 8*root.mm
          anchors.leftMargin: 3*root.mm; anchors.rightMargin: root.mm
          anchors.bottomMargin: 1*root.mm
          clip: true
          spacing: 0
          footer: footerComponent
          model: newsModel
          delegate: Newsitem{}
          }

       ListModel{id: newsModel}

       WorkerScript {
              id: newsWorker
              source: "qrc:/js/newsworker.js"
          }

       Button {
            id: update
            anchors.top: parent.top
            anchors.right: quitButton.left
            text: "Update"
               onClicked: { //try{newsModel.clear()} catch(e){}
                   newsBusy.running=true;
                   root.contactLoadType="news";
                   Newsjs.getFriendsTimeline(login,db,contactlist,newstab,function(ns,nc){
                       root.news=ns;root.newContacts=nc;root.currentContact=0;
                       if (ns.length==0){
                           Newsjs.getDirectMessage(root.login,root.db,root,function(dbnews){showNews(dbnews)});
                           newsBusy.running=false}
                   })}
        }
       BusyIndicator{
         id: newsBusy
          anchors.centerIn:update
         //anchors.right: update.left
         //anchors.top:parent.top
         width:7*mm
         height: 7*mm
       }
    Component.onCompleted: {
       root.messageSignal.connect(onFriendsMessages);
       root.directmessageSignal.connect(onDirectMessage);
       root.newsSignal.connect(showNews);
       try{newsModel.clear()} catch(e){}
        Newsjs.newsfromdb(root.db,root.login.username, function(dbnews){
            showNews(dbnews)
            })
        }
}
}
}