From 93fd268d531fd61c9c619adc4e08ea9cb0cb2fcd Mon Sep 17 00:00:00 2001
From: Paul Olav Tvete <paul.tvete@digia.com>
Date: Thu, 16 Jan 2014 10:42:47 +0100
Subject: Implement the new inputmethod query API for Qt Quick

Part fixing Android input methods. This change corresponds
to 68a9229a97d358639 in the qtbase repository.

Task-number: QTBUG-37511
Change-Id: I483abf6a9d5dec86dbd1ae2dff2a85bc19d126f1
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
---
 src/quick/items/qquicktextcontrol.cpp | 46 +++++++++++++++++++++++++++++++++++
 src/quick/items/qquicktextcontrol_p.h |  1 +
 2 files changed, 47 insertions(+)

diff --git a/src/quick/items/qquicktextcontrol.cpp b/src/quick/items/qquicktextcontrol.cpp
index 0a9677bd4e..53d736fb36 100644
--- a/src/quick/items/qquicktextcontrol.cpp
+++ b/src/quick/items/qquicktextcontrol.cpp
@@ -1364,6 +1364,11 @@ void QQuickTextControlPrivate::inputMethodEvent(QInputMethodEvent *e)
 }
 
 QVariant QQuickTextControl::inputMethodQuery(Qt::InputMethodQuery property) const
+{
+    return inputMethodQuery(property, QVariant());
+}
+
+QVariant QQuickTextControl::inputMethodQuery(Qt::InputMethodQuery property, QVariant argument) const
 {
     Q_D(const QQuickTextControl);
     QTextBlock block = d->cursor.block();
@@ -1382,6 +1387,47 @@ QVariant QQuickTextControl::inputMethodQuery(Qt::InputMethodQuery property) cons
         return QVariant(); // No limit.
     case Qt::ImAnchorPosition:
         return QVariant(d->cursor.anchor() - block.position());
+    case Qt::ImAbsolutePosition:
+        return QVariant(d->cursor.anchor());
+    case Qt::ImTextAfterCursor:
+    {
+        int maxLength = argument.isValid() ? argument.toInt() : 1024;
+        QTextCursor tmpCursor = d->cursor;
+        int localPos = d->cursor.position() - block.position();
+        QString result = block.text().mid(localPos);
+        while (result.length() < maxLength) {
+            int currentBlock = tmpCursor.blockNumber();
+            tmpCursor.movePosition(QTextCursor::NextBlock);
+            if (tmpCursor.blockNumber() == currentBlock)
+                break;
+            result += QLatin1Char('\n') + tmpCursor.block().text();
+        }
+        return QVariant(result);
+    }
+    case Qt::ImTextBeforeCursor:
+    {
+        int maxLength = argument.isValid() ? argument.toInt() : 1024;
+        QTextCursor tmpCursor = d->cursor;
+        int localPos = d->cursor.position() - block.position();
+        int numBlocks = 0;
+        int resultLen = localPos;
+        while (resultLen < maxLength) {
+            int currentBlock = tmpCursor.blockNumber();
+            tmpCursor.movePosition(QTextCursor::PreviousBlock);
+            if (tmpCursor.blockNumber() == currentBlock)
+                break;
+            numBlocks++;
+            resultLen += tmpCursor.block().length();
+        }
+        QString result;
+        while (numBlocks) {
+            result += tmpCursor.block().text() + QLatin1Char('\n');
+            tmpCursor.movePosition(QTextCursor::NextBlock);
+            --numBlocks;
+        }
+        result += block.text().mid(0,localPos);
+        return QVariant(result);
+    }
     default:
         return QVariant();
     }
diff --git a/src/quick/items/qquicktextcontrol_p.h b/src/quick/items/qquicktextcontrol_p.h
index bc5371b0c3..39221ced11 100644
--- a/src/quick/items/qquicktextcontrol_p.h
+++ b/src/quick/items/qquicktextcontrol_p.h
@@ -160,6 +160,7 @@ public:
 
 #ifndef QT_NO_IM
     virtual QVariant inputMethodQuery(Qt::InputMethodQuery property) const;
+    Q_INVOKABLE QVariant inputMethodQuery(Qt::InputMethodQuery query, QVariant argument) const;
 #endif
 
     virtual QMimeData *createMimeDataFromSelection() const;
-- 
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