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