dynamicshortcutswidget.cpp

/*
  Copyright (c) 2012, BuildmLearn Contributors listed at http://buildmlearn.org/people/
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    contributors may be used to endorse or promote products derived from
    this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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#include "dynamic-shortcuts/dynamicshortcutswidget.h"

#include "dynamic-shortcuts/shortcutcatcher.h"
#include "dynamic-shortcuts/shortcutbutton.h"
#include "definitions/definitions.h"

#include <QGridLayout>
#include <QAction>
#include <QLabel>
#include <QSpacerItem>
#include <QPalette>


DynamicShortcutsWidget::DynamicShortcutsWidget(QWidget *parent) : QWidget(parent) {
  // Create layout for this control and set is as active.
  m_layout = new QGridLayout(this);
  m_layout->setMargin(0);

  setLayout(m_layout);
}

DynamicShortcutsWidget::~DynamicShortcutsWidget() {
  delete m_layout;
}

bool DynamicShortcutsWidget::areShortcutsUnique() {
  QList<QKeySequence> all_shortcuts;

  // Obtain all shortcuts.
  foreach (const ActionBinding &binding, m_actionBindings) {
    QKeySequence new_shortcut = binding.second->shortcut();

    if (!new_shortcut.isEmpty() && all_shortcuts.contains(new_shortcut)) {
      // Problem, two identical non-empty shortcuts found.
      return false;
    }
    else {
      all_shortcuts.append(binding.second->shortcut());
    }
  }

  return true;
}

void DynamicShortcutsWidget::updateShortcuts() {
  foreach (const ActionBinding &binding, m_actionBindings) {
    binding.first->setShortcut(binding.second->shortcut());
  }
}

void DynamicShortcutsWidget::populate(const QList<QAction*> actions) {
  m_actionBindings.clear();

  int row_id = 0;

  foreach (QAction *action, actions) {
    // Create shortcut catcher for this action and set default shortcut.
    ShortcutCatcher *catcher = new ShortcutCatcher(this);
    catcher->setDefaultShortcut(action->shortcut());

    // Store information for re-initialization of shortcuts
    // of actions when widget gets "confirmed".
    QPair<QAction*,ShortcutCatcher*> new_binding;
    new_binding.first = action;
    new_binding.second = catcher;

    m_actionBindings << new_binding;

    // Add new catcher to our control.
    QLabel *action_label = new QLabel(this);
    action_label->setText(action->text().remove('&'));
    action_label->setToolTip(action->toolTip());
    action_label->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Preferred);

    QLabel *action_icon = new QLabel(this);
    action_icon->setPixmap(action->icon().pixmap(ICON_SIZE_SETTINGS, ICON_SIZE_SETTINGS));
    action_icon->setToolTip(action->toolTip());

    m_layout->addWidget(action_icon, row_id, 0);
    m_layout->addWidget(action_label, row_id, 1);
    m_layout->addWidget(catcher, row_id, 2);

    row_id++;
  }

  // Make sure that "spacer" is added.
  m_layout->setRowStretch(row_id, 1);
  m_layout->setColumnStretch(1, 1);
}