src/qt/qvalidatedlineedit.cpp

   1 // Copyright (c) 2011-2016 The Bitcoin Core developers
   2 // Distributed under the MIT software license, see the accompanying
   3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   4
   5 #include "qvalidatedlineedit.h"
   6
   7 #include "bitcoinaddressvalidator.h"
   8 #include "guiconstants.h"
   9
  10 QValidatedLineEdit::QValidatedLineEdit(QWidget *parent) :
  11     QLineEdit(parent),
  12     valid(true),
  13     checkValidator(0)
  14 {
  15     connect(this, SIGNAL(textChanged(QString)), this, SLOT(markValid()));
  16 }
  17
  18 void QValidatedLineEdit::setValid(bool _valid)
  19 {
  20     if(_valid == this->valid)
  21     {
  22         return;
  23     }
  24
  25     if(_valid)
  26     {
  27         setStyleSheet("");
  28     }
  29     else
  30     {
  31         setStyleSheet(STYLE_INVALID);
  32     }
  33     this->valid = _valid;
  34 }
  35
  36 void QValidatedLineEdit::focusInEvent(QFocusEvent *evt)
  37 {
  38     // Clear invalid flag on focus
  39     setValid(true);
  40
  41     QLineEdit::focusInEvent(evt);
  42 }
  43
  44 void QValidatedLineEdit::focusOutEvent(QFocusEvent *evt)
  45 {
  46     checkValidity();
  47
  48     QLineEdit::focusOutEvent(evt);
  49 }
  50
  51 void QValidatedLineEdit::markValid()
  52 {
  53     // As long as a user is typing ensure we display state as valid
  54     setValid(true);
  55 }
  56
  57 void QValidatedLineEdit::clear()
  58 {
  59     setValid(true);
  60     QLineEdit::clear();
  61 }
  62
  63 void QValidatedLineEdit::setEnabled(bool enabled)
  64 {
  65     if (!enabled)
  66     {
  67         // A disabled QValidatedLineEdit should be marked valid
  68         setValid(true);
  69     }
  70     else
  71     {
  72         // Recheck validity when QValidatedLineEdit gets enabled
  73         checkValidity();
  74     }
  75
  76     QLineEdit::setEnabled(enabled);
  77 }
  78
  79 void QValidatedLineEdit::checkValidity()
  80 {
  81     if (text().isEmpty())
  82     {
  83         setValid(true);
  84     }
  85     else if (hasAcceptableInput())
  86     {
  87         setValid(true);
  88
  89         // Check contents on focus out
  90         if (checkValidator)
  91         {
  92             QString address = text();
  93             int pos = 0;
  94             if (checkValidator->validate(address, pos) == QValidator::Acceptable)
  95                 setValid(true);
  96             else
  97                 setValid(false);
  98         }
  99     }
 100     else
 101         setValid(false);
 102
 103     Q_EMIT validationDidChange(this);
 104 }
 105
 106 void QValidatedLineEdit::setCheckValidator(const QValidator *v)
 107 {
 108     checkValidator = v;
 109 }
 110
 111 bool QValidatedLineEdit::isValid()
 112 {
 113     // use checkValidator in case the QValidatedLineEdit is disabled
 114     if (checkValidator)
 115     {
 116         QString address = text();
 117         int pos = 0;
 118         if (checkValidator->validate(address, pos) == QValidator::Acceptable)
 119             return true;
 120     }
 121
 122     return valid;
 123 }