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 // Qt defines a macro 'signals' that clashes with a boost namespace.
  14 // All is well if the namespace is visible first.
  15 #include "QtView.h"
  16
  17 #include "QCommandBuffer.h"
  18 #include "QCommandEdit.h"
  19 #include "qt_helpers.h"
  20
  21 #include "controllers/ControlCommandBuffer.h"
  22
  23 #include "support/filetools.h"
  24
  25 #include <qlistbox.h>
  26 #include <qlayout.h>
  27 #include <qtooltip.h>
  28 #include <qpushbutton.h>
  29
  30 using lyx::support::libFileSearch;
  31
  32 using std::vector;
  33 using std::string;
  34
  35 namespace lyx {
  36 namespace frontend {
  37
  38 namespace {
  39
  40 class QTempListBox : public QListBox {
  41 public:
  42         QTempListBox()
  43                 : QListBox(0, 0,
  44                            WType_Modal | WType_Popup | WDestructiveClose) {
  45                 setHScrollBarMode(AlwaysOff);
  46         }
  47 protected:
  48         void mouseReleaseEvent(QMouseEvent * e) {
  49                 if (e->x() < 0 || e->y() < 0
  50                     || e->x() > width() || e->y() > height()) {
  51                         hide();
  52                 } else {
  53                         emit selected(currentText());
  54                 }
  55         }
  56
  57         void keyPressEvent(QKeyEvent * e) {
  58                 if (e->key() == Key_Escape) {
  59                         hide();
  60                         return;
  61                 }
  62                 QListBox::keyPressEvent(e);
  63         }
  64 };
  65
  66 } // end of anon
  67
  68
  69 QCommandBuffer::QCommandBuffer(QtView * view, QWidget * parent, ControlCommandBuffer & control)
  70         : QWidget(parent), view_(view), controller_(control)
  71 {
  72         QPixmap qpup(toqstr(libFileSearch("images", "up", "xpm")));
  73         QPixmap qpdown(toqstr(libFileSearch("images", "down", "xpm")));
  74
  75         QVBoxLayout * top = new QVBoxLayout(this);
  76         QHBoxLayout * layout = new QHBoxLayout(0);
  77
  78         QPushButton * up = new QPushButton(qpup, "", this);
  79         QToolTip::add(up, qt_("Previous command"));
  80         connect(up, SIGNAL(clicked()), this, SLOT(up()));
  81         QPushButton * down = new QPushButton(qpdown, "", this);
  82         QToolTip::add(down, qt_("Next command"));
  83         connect(down, SIGNAL(clicked()), this, SLOT(down()));
  84
  85         edit_ = new QCommandEdit(this);
  86         edit_->setMinimumSize(edit_->sizeHint());
  87         edit_->setFocusPolicy(ClickFocus);
  88
  89         connect(edit_, SIGNAL(escapePressed()), this, SLOT(cancel()));
  90         connect(edit_, SIGNAL(returnPressed()), this, SLOT(dispatch()));
  91         connect(edit_, SIGNAL(tabPressed()), this, SLOT(complete()));
  92         connect(edit_, SIGNAL(upPressed()), this, SLOT(up()));
  93         connect(edit_, SIGNAL(downPressed()), this, SLOT(down()));
  94
  95         layout->addWidget(up, 0);
  96         layout->addWidget(down, 0);
  97         layout->addWidget(edit_, 10);
  98         top->addLayout(layout);
  99 }
 100
 101
 102
 103 void QCommandBuffer::focus_command()
 104 {
 105         edit_->setFocus();
 106 }
 107
 108
 109 void QCommandBuffer::cancel()
 110 {
 111         view_->centralWidget()->setFocus();
 112         edit_->setText("");
 113 }
 114
 115
 116 void QCommandBuffer::dispatch()
 117 {
 118         controller_.dispatch(fromqstr(edit_->text()));
 119         view_->centralWidget()->setFocus();
 120         edit_->setText("");
 121         edit_->clearFocus();
 122 }
 123
 124
 125 void QCommandBuffer::complete()
 126 {
 127         string const input = fromqstr(edit_->text());
 128         string new_input;
 129         vector<string> comp = controller_.completions(input, new_input);
 130
 131         if (comp.empty() && new_input == input) {
 132         //      show_info_suffix(qt_("[no match]"), input);
 133                 return;
 134         }
 135
 136         if (comp.empty()) {
 137                 edit_->setText(toqstr(new_input));
 138         //      show_info_suffix(("[only completion]"), new_input + ' ');
 139                 return;
 140         }
 141
 142         edit_->setText(toqstr(new_input));
 143
 144         QTempListBox * list = new QTempListBox;
 145
 146         // For some reason the scrollview's contents are larger
 147         // than the number of actual items...
 148         vector<string>::const_iterator cit = comp.begin();
 149         vector<string>::const_iterator end = comp.end();
 150         for (; cit != end; ++cit) {
 151                 list->insertItem(toqstr(*cit));
 152         }
 153
 154         // width() is not big enough by a few pixels. Qt Sucks.
 155         list->setMinimumWidth(list->sizeHint().width() + 10);
 156
 157         list->resize(list->sizeHint());
 158         QPoint pos(edit_->mapToGlobal(QPoint(0, 0)));
 159
 160         int y = std::max(0, pos.y() - list->height());
 161
 162         list->move(pos.x(), y);
 163
 164         connect(list, SIGNAL(selected(const QString &)),
 165                 this, SLOT(complete_selected(const QString &)));
 166
 167         list->show();
 168         list->setFocus();
 169 }
 170
 171
 172 void QCommandBuffer::complete_selected(QString const & str)
 173 {
 174         QWidget const * widget = static_cast<QWidget const *>(sender());
 175         const_cast<QWidget *>(widget)->hide();
 176         edit_->setText(str + ' ');
 177         edit_->setFocus();
 178 }
 179
 180
 181 void QCommandBuffer::up()
 182 {
 183         string const input(fromqstr(edit_->text()));
 184         string const h(controller_.historyUp());
 185
 186         if (h.empty()) {
 187         //      show_info_suffix(qt_("[Beginning of history]"), input);
 188         } else {
 189                 edit_->setText(toqstr(h));
 190         }
 191 }
 192
 193
 194 void QCommandBuffer::down()
 195 {
 196         string const input(fromqstr(edit_->text()));
 197         string const h(controller_.historyDown());
 198
 199         if (h.empty()) {
 200         //      show_info_suffix(qt_("[End of history]"), input);
 201         } else {
 202                 edit_->setText(toqstr(h));
 203         }
 204 }
 205
 206
 207 #if 0
 208 void XMiniBuffer::show_info_suffix(string const & suffix, string const & input)
 209 {
 210         stored_input_ = input;
 211         info_suffix_shown_ = true;
 212         set_input(input + ' ' + suffix);
 213         suffix_timer_->start();
 214 }
 215
 216
 217 void XMiniBuffer::suffix_timeout()
 218 {
 219         info_suffix_shown_ = false;
 220         set_input(stored_input_);
 221 }
 222
 223 #endif
 224
 225 } // namespace frontend
 226 } // namespace lyx