Add a length property to TextEdit.

This returns the length of the unformatted text in a TextEdit which
should be cheaper to query than the length of the text property and
meaningful in the context of the selection and cursor properties.

Task-number: QTBUG-18949
Change-Id: Ia25c4553693923f97d299f1fdb8bfcf7f5937b13
Reviewed-by: Martin Jones <martin.jones@nokia.com>

2 files changed, 22 insertions, 0 deletions

diff --git a/src/declarative/items/qquicktextedit.cpp b/src/declarative/items/qquicktextedit.cpp
index 2e799200e6..51231e17de 100644
--- a/src/declarative/items/qquicktextedit.cpp
+++ b/src/declarative/items/qquicktextedit.cpp
@@ -636,6 +636,25 @@ int QQuickTextEdit::lineCount() const
 }
 
 /*!
+    \qmlproperty int QtQuick2::TextEdit::length
+
+    Returns the total number of plain text characters in the TextEdit item.
+
+    As this number doesn't include any formatting markup it may not be the same as the
+    length of the string returned by the \l text property.
+
+    This property can be faster than querying the length the \l text property as it doesn't
+    require any copying or conversion of the TextEdit's internal string data.
+*/
+
+int QQuickTextEdit::length() const
+{
+    Q_D(const QQuickTextEdit);
+    // QTextDocument::characterCount() includes the terminating null character.
+    return qMax(0, d->document->characterCount() - 1);
+}
+
+/*!
     \qmlproperty real QtQuick2::TextEdit::paintedWidth
 
     Returns the width of the text, including the width past the width
diff --git a/src/declarative/items/qquicktextedit_p.h b/src/declarative/items/qquicktextedit_p.h
index 66b68ffd85..25988959f6 100644
--- a/src/declarative/items/qquicktextedit_p.h
+++ b/src/declarative/items/qquicktextedit_p.h
@@ -73,6 +73,7 @@ class Q_AUTOTEST_EXPORT QQuickTextEdit : public QQuickImplicitSizeItem
     Q_PROPERTY(VAlignment verticalAlignment READ vAlign WRITE setVAlign NOTIFY verticalAlignmentChanged)
     Q_PROPERTY(WrapMode wrapMode READ wrapMode WRITE setWrapMode NOTIFY wrapModeChanged)
     Q_PROPERTY(int lineCount READ lineCount NOTIFY lineCountChanged)
+    Q_PROPERTY(int length READ length NOTIFY textChanged)
     Q_PROPERTY(qreal paintedWidth READ paintedWidth NOTIFY paintedSizeChanged)
     Q_PROPERTY(qreal paintedHeight READ paintedHeight NOTIFY paintedSizeChanged)
     Q_PROPERTY(TextFormat textFormat READ textFormat WRITE setTextFormat NOTIFY textFormatChanged)
@@ -161,6 +162,8 @@ public:
 
     int lineCount() const;
 
+    int length() const;
+
     bool isCursorVisible() const;
     void setCursorVisible(bool on);