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