From 88d9be953babda68cb5325258569578c11fa4438 Mon Sep 17 00:00:00 2001
From: Ilya Kitaev <mbg033@gmail.com>
Date: Tue, 21 Jun 2016 11:58:06 +0300
Subject: [PATCH] Lazy loading for the tweets

---
 RightPanel.qml       | 13 +++++++++++-
 main.qml             |  6 ++++++
 tabs/TweetsModel.qml | 48 +++++++++++++++++++-------------------------
 tabs/Twitter.qml     |  8 ++++++++
 4 files changed, 47 insertions(+), 28 deletions(-)

diff --git a/RightPanel.qml b/RightPanel.qml
index b29cb28a..c5878146 100644
--- a/RightPanel.qml
+++ b/RightPanel.qml
@@ -36,6 +36,11 @@ Rectangle {
     width: 330
     color: "#FFFFFF"
 
+    function updateTweets() {
+        tabView.twitter.item.updateTweets()
+    }
+
+
     TabView {
         id: tabView
         anchors.left: parent.left
@@ -45,12 +50,18 @@ Rectangle {
         anchors.leftMargin: 14
         anchors.rightMargin: 14
         anchors.topMargin: 40
+        property alias twitter: twitter
 
-        Tab { title: qsTr("Twitter"); source: "tabs/Twitter.qml" }
+
+
+
+        Tab { id: twitter; title: qsTr("Twitter"); source: "tabs/Twitter.qml" }
         Tab { title: "News" }
         Tab { title: "Help" }
         Tab { title: "About" }
 
+
+
         style: TabViewStyle {
             frameOverlap: 0
             tabOverlap: 0
diff --git a/main.qml b/main.qml
index 7101d096..6f90bcf8 100644
--- a/main.qml
+++ b/main.qml
@@ -210,6 +210,12 @@ ApplicationWindow {
         }
     }
 
+    onRightPanelExpandedChanged: {
+        if (rightPanelExpanded) {
+            rightPanel.updateTweets()
+        }
+    }
+
     Settings {
         id: persistentSettings
         property string language
diff --git a/tabs/TweetsModel.qml b/tabs/TweetsModel.qml
index a6b40aa6..55a7c74d 100644
--- a/tabs/TweetsModel.qml
+++ b/tabs/TweetsModel.qml
@@ -56,47 +56,41 @@ Item {
 
     function reload() {
         tweets.clear()
-
         if (from == "" && phrase == "")
             return;
-
-        if (appWindow.rightPanelExpanded) {
-
-//! [requesting]
-            var req = new XMLHttpRequest;
-            req.open("GET", "https://api.twitter.com/1.1/search/tweets.json?from=" + from +
-                            "&count=" + tweetsMaxCount + "&q=" + encodePhrase(phrase));
-            req.setRequestHeader("Authorization", "Bearer " + bearerToken);
-            req.onreadystatechange = function() {
-                status = req.readyState;
-                if (status === XMLHttpRequest.DONE) {
-                    var objectArray = JSON.parse(req.responseText);
-                    if (objectArray.errors !== undefined)
-                        console.log("Error fetching tweets: " + objectArray.errors[0].message)
-                    else {
-                        for (var key in objectArray.statuses) {
-                            var jsonObject = objectArray.statuses[key];
-                            tweets.append(jsonObject);
-                        }
+        //! [requesting]
+        var req = new XMLHttpRequest;
+        req.open("GET", "https://api.twitter.com/1.1/search/tweets.json?from=" + from +
+                 "&count=" + tweetsMaxCount + "&q=" + encodePhrase(phrase));
+        req.setRequestHeader("Authorization", "Bearer " + bearerToken);
+        req.onreadystatechange = function() {
+            status = req.readyState;
+            if (status === XMLHttpRequest.DONE) {
+                var objectArray = JSON.parse(req.responseText);
+                if (objectArray.errors !== undefined)
+                    console.log("Error fetching tweets: " + objectArray.errors[0].message)
+                else {
+                    for (var key in objectArray.statuses) {
+                        var jsonObject = objectArray.statuses[key];
+                        tweets.append(jsonObject);
                     }
-                    if (wasLoading == true)
-                        wrapper.isLoaded()
                 }
-                wasLoading = (status === XMLHttpRequest.LOADING);
+                if (wasLoading == true)
+                    wrapper.isLoaded()
             }
-            req.send();
-//! [requesting]
+            wasLoading = (status === XMLHttpRequest.LOADING);
         }
+        req.send();
+        //! [requesting]
     }
 
-
     Component.onCompleted: {
         if (consumerKey === "" || consumerSecret == "") {
             console.log("setting demo token")
             bearerToken = encodeURIComponent(Helper.demoToken())
             tweetsModel.phrase = ""
             tweetsModel.from = "@monerocurrency"
-            reload()
+            // reload()
             return;
         }
 
diff --git a/tabs/Twitter.qml b/tabs/Twitter.qml
index 553e7da6..bd597287 100644
--- a/tabs/Twitter.qml
+++ b/tabs/Twitter.qml
@@ -34,6 +34,8 @@ import "../components"
 Item {
     id: tab
 
+
+
     ListModel {
         id: testModel
         ListElement { head: "Monero || #xmr"; foot: "<b>@btcplanet</b> Duis turpis arcu, varius nec rutrum in, adipiscing at enim. Donec quis consequat ipsum," }
@@ -56,10 +58,16 @@ Item {
     property var idx
     property var ids
 
+    function updateTweets() {
+        tweetsModel.reload()
+    }
+
+
     Component.onCompleted: {
         ids = new Array()
     }
 
+
     function idInModel(id) {
         for (var j = 0; j < ids.length; j++)
             if (ids[j] === id)