src/frontends/qt2/QCommandBuffer.C

   1 /**
   2  * \file QCommandBuffer.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author John Levon
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "support/filetools.h"
  14 #include "controllers/ControlCommandBuffer.h"
  15 #include "qt_helpers.h"
  16
  17 #include "QtView.h"
  18 #include "QCommandBuffer.h"
  19 #include "QCommandEdit.h"
  20
  21 #include <qlistbox.h>
  22 #include <qlayout.h>
  23 #include <qtooltip.h>
  24 #include <qpushbutton.h>
  25
  26 using lyx::support::LibFileSearch;
  27
  28 using std::vector;
  29 using std::string;
  30
  31
  32 namespace {
  33
  34 class QTempListBox : public QListBox {
  35 public:
  36         QTempListBox()
  37                 : QListBox(0, 0,
  38                            WType_Modal | WType_Popup | WDestructiveClose) {
  39                 setHScrollBarMode(AlwaysOff);
  40         }
  41 protected:
  42         void mouseReleaseEvent(QMouseEvent * e) {
  43                 if (e->x() < 0 || e->y() < 0
  44                     || e->x() > width() || e->y() > height()) {
  45                         hide();
  46                 } else {
  47                         emit selected(currentText());
  48                 }
  49         }
  50
  51         void keyPressEvent(QKeyEvent * e) {
  52                 if (e->key() == Key_Escape) {
  53                         hide();
  54                         return;
  55                 }
  56                 QListBox::keyPressEvent(e);
  57         }
  58 };
  59
  60 } // end of anon
  61
  62
  63 QCommandBuffer::QCommandBuffer(QtView * view, QWidget * parent, ControlCommandBuffer & control)
  64         : QWidget(parent), view_(view), controller_(control)
  65 {
  66         QPixmap qpup(toqstr(LibFileSearch("images", "up", "xpm")));
  67         QPixmap qpdown(toqstr(LibFileSearch("images", "down", "xpm")));
  68
  69         QVBoxLayout * top = new QVBoxLayout(this);
  70         QHBoxLayout * layout = new QHBoxLayout(0);
  71
  72         QPushButton * up = new QPushButton(qpup, "", this);
  73         QToolTip::add(up, qt_("Previous command"));
  74         connect(up, SIGNAL(clicked()), this, SLOT(up()));
  75         QPushButton * down = new QPushButton(qpdown, "", this);
  76         QToolTip::add(down, qt_("Next command"));
  77         connect(down, SIGNAL(clicked()), this, SLOT(down()));
  78
  79         edit_ = new QCommandEdit(this);
  80         edit_->setMinimumSize(edit_->sizeHint());
  81         edit_->setFocusPolicy(ClickFocus);
  82
  83         connect(edit_, SIGNAL(escapePressed()), this, SLOT(cancel()));
  84         connect(edit_, SIGNAL(returnPressed()), this, SLOT(dispatch()));
  85         connect(edit_, SIGNAL(tabPressed()), this, SLOT(complete()));
  86         connect(edit_, SIGNAL(upPressed()), this, SLOT(up()));
  87         connect(edit_, SIGNAL(downPressed()), this, SLOT(down()));
  88
  89         layout->addWidget(up, 0);
  90         layout->addWidget(down, 0);
  91         layout->addWidget(edit_, 10);
  92         top->addLayout(layout);
  93 }
  94
  95
  96
  97 void QCommandBuffer::focus_command()
  98 {
  99         edit_->setFocus();
 100 }
 101
 102
 103 void QCommandBuffer::cancel()
 104 {
 105         view_->centralWidget()->setFocus();
 106         edit_->setText("");
 107 }
 108
 109
 110 void QCommandBuffer::dispatch()
 111 {
 112         controller_.dispatch(fromqstr(edit_->text()));
 113         view_->centralWidget()->setFocus();
 114         edit_->setText("");
 115         edit_->clearFocus();
 116 }
 117
 118
 119 void QCommandBuffer::complete()
 120 {
 121         string const input = fromqstr(edit_->text());
 122         string new_input;
 123         vector<string> comp = controller_.completions(input, new_input);
 124
 125         if (comp.empty() && new_input == input) {
 126         //      show_info_suffix(qt_("[no match]"), input);
 127                 return;
 128         }
 129
 130         if (comp.empty()) {
 131                 edit_->setText(toqstr(new_input));
 132         //      show_info_suffix(("[only completion]"), new_input + ' ');
 133                 return;
 134         }
 135
 136         edit_->setText(toqstr(new_input));
 137
 138         QTempListBox * list = new QTempListBox;
 139
 140         // For some reason the scrollview's contents are larger
 141         // than the number of actual items...
 142         vector<string>::const_iterator cit = comp.begin();
 143         vector<string>::const_iterator end = comp.end();
 144         for (; cit != end; ++cit) {
 145                 list->insertItem(toqstr(*cit));
 146         }
 147
 148         // width() is not big enough by a few pixels. Qt Sucks.
 149         list->setMinimumWidth(list->sizeHint().width() + 10);
 150
 151         list->resize(list->sizeHint());
 152         QPoint pos(edit_->mapToGlobal(QPoint(0, 0)));
 153
 154         int y = std::max(0, pos.y() - list->height());
 155
 156         list->move(pos.x(), y);
 157
 158         connect(list, SIGNAL(selected(const QString &)),
 159                 this, SLOT(complete_selected(const QString &)));
 160
 161         list->show();
 162         list->setFocus();
 163 }
 164
 165
 166 void QCommandBuffer::complete_selected(QString const & str)
 167 {
 168         QWidget const * widget = static_cast<QWidget const *>(sender());
 169         const_cast<QWidget *>(widget)->hide();
 170         edit_->setText(str + ' ');
 171         edit_->setFocus();
 172 }
 173
 174
 175 void QCommandBuffer::up()
 176 {
 177         string const input(fromqstr(edit_->text()));
 178         string const h(controller_.historyUp());
 179
 180         if (h.empty()) {
 181         //      show_info_suffix(qt_("[Beginning of history]"), input);
 182         } else {
 183                 edit_->setText(toqstr(h));
 184         }
 185 }
 186
 187
 188 void QCommandBuffer::down()
 189 {
 190         string const input(fromqstr(edit_->text()));
 191         string const h(controller_.historyDown());
 192
 193         if (h.empty()) {
 194         //      show_info_suffix(qt_("[End of history]"), input);
 195         } else {
 196                 edit_->setText(toqstr(h));
 197         }
 198 }
 199
 200
 201 #if 0
 202 void XMiniBuffer::show_info_suffix(string const & suffix, string const & input)
 203 {
 204         stored_input_ = input;
 205         info_suffix_shown_ = true;
 206         set_input(input + ' ' + suffix);
 207         suffix_timer_->start();
 208 }
 209
 210
 211 void XMiniBuffer::suffix_timeout()
 212 {
 213         info_suffix_shown_ = false;
 214         set_input(stored_input_);
 215 }
 216
 217 #endif