From 5dbcd714eae8bfd6e900adde6910789e5cce6613 Mon Sep 17 00:00:00 2001
From: mmbyday <mmbyday@protonmail.com>
Date: Thu, 13 Dec 2018 18:49:55 -0800
Subject: [PATCH] PasswordDialog: add CAPSLOCK checking

---
 components/PasswordDialog.qml | 41 ++++++++++++++++++++++++++++++-----
 js/Utils.js                   | 19 ++++++++++++++++
 2 files changed, 55 insertions(+), 5 deletions(-)

diff --git a/components/PasswordDialog.qml b/components/PasswordDialog.qml
index a5758306..f820e4df 100644
--- a/components/PasswordDialog.qml
+++ b/components/PasswordDialog.qml
@@ -34,6 +34,7 @@ import QtQuick.Controls.Styles 1.4
 import QtQuick.Window 2.0
 
 import "../components" as MoneroComponents
+import "../js/Utils.js" as Utils
 
 Item {
     id: root
@@ -44,6 +45,9 @@ Item {
     property alias password: passwordInput.text
     property string walletName
     property string errorText
+    property bool shiftIsPressed: false
+    property bool isCapsLocksActive: false
+    property bool backspaceIsPressed: false
 
     // same signals as Dialog has
     signal accepted()
@@ -51,9 +55,11 @@ Item {
     signal closeCallback()
 
     function open(walletName, errorText) {
+        passwordInput.text = ""
+        passwordInput.forceActiveFocus();
         inactiveOverlay.visible = true // draw appwindow inactive
         root.walletName = walletName ? walletName : ""
-        root.errorText = errorText ? errorText : "";
+        errorTextLabel.text = errorText ? errorText : "";
         leftPanel.enabled = false
         middlePanel.enabled = false
         titleBar.enabled = false
@@ -104,8 +110,8 @@ Item {
             }
 
             Label {
-                text: root.errorText
-                visible: root.errorText
+                id: errorTextLabel
+                visible: root.errorText || text !== ""
 
                 color: MoneroComponents.Style.errorColor
                 font.pixelSize: 16 * scaleRatio
@@ -131,6 +137,17 @@ Item {
                 selectionColor: MoneroComponents.Style.dimmedFontColor
                 selectedTextColor: MoneroComponents.Style.defaultFontColor
 
+                onTextChanged: {
+                    var letter = text[passwordInput.text.length - 1];
+                    isCapsLocksActive = Utils.isUpperLock(shiftIsPressed, letter);
+                    if(isCapsLocksActive && !backspaceIsPressed){
+                        errorTextLabel.text = qsTr("CAPSLOCKS IS ON.") + translationManager.emptyString;
+                    }
+                    else{
+                        errorTextLabel.text = "";
+                    }
+                }
+
                 background: Rectangle {
                     radius: 2
                     border.color: Qt.rgba(255, 255, 255, 0.35)
@@ -172,12 +189,26 @@ Item {
                 Keys.onReturnPressed: {
                     root.close()
                     root.accepted()
-
                 }
                 Keys.onEscapePressed: {
                     root.close()
                     root.rejected()
-
+                }
+                Keys.onPressed: {
+                    if(event.key === Qt.Key_Shift){
+                        shiftIsPressed = true;
+                    }
+                    if(event.key === Qt.Key_Backspace){
+                        backspaceIsPressed = true;
+                    }
+                }
+                Keys.onReleased: {
+                    if(event.key === Qt.Key_Shift){
+                        shiftIsPressed = false;
+                    }
+                    if(event.key === Qt.Key_Backspace){
+                        backspaceIsPressed =false;
+                    }
                 }
             }
 
diff --git a/js/Utils.js b/js/Utils.js
index 4f522a35..f02303c5 100644
--- a/js/Utils.js
+++ b/js/Utils.js
@@ -107,3 +107,22 @@ function filterNodes(nodes, port) {
 function epoch(){
     return Math.floor((new Date).getTime()/1000);
 }
+
+function isAlpha(letter){ return letter.match(/^[A-Za-z0-9]+$/) !== null; }
+
+function isLowerCaseChar(letter){ return letter === letter.toLowerCase(); }
+
+function isUpperLock(shift, letter){
+    if(!isAlpha((letter))) return false;
+    if(shift) {
+        if(isLowerCaseChar(letter))
+            return true;
+        else
+            return false;
+    } else {
+        if(isLowerCaseChar(letter))
+            return false;
+        else
+            return true;
+    }
+}