juce/source/src/gui/components/filebrowser/juce_FileChooserDialogBox.cpp

   1 /*
   2   ==============================================================================
   3
   4    This file is part of the JUCE library - "Jules' Utility Class Extensions"
   5    Copyright 2004-11 by Raw Material Software Ltd.
   6
   7   ------------------------------------------------------------------------------
   8
   9    JUCE can be redistributed and/or modified under the terms of the GNU General
  10    Public License (Version 2), as published by the Free Software Foundation.
  11    A copy of the license is included in the JUCE distribution, or can be found
  12    online at www.gnu.org/licenses.
  13
  14    JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
  15    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  16    A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  17
  18   ------------------------------------------------------------------------------
  19
  20    To release a closed-source product which uses JUCE, commercial licenses are
  21    available: visit www.rawmaterialsoftware.com/juce for more information.
  22
  23   ==============================================================================
  24 */
  25
  26 #include "../../../core/juce_StandardHeader.h"
  27
  28 BEGIN_JUCE_NAMESPACE
  29
  30 #include "juce_FileChooserDialogBox.h"
  31 #include "../lookandfeel/juce_LookAndFeel.h"
  32 #include "../../../text/juce_LocalisedStrings.h"
  33
  34
  35 //==============================================================================
  36 class FileChooserDialogBox::ContentComponent  : public Component
  37 {
  38 public:
  39     //==============================================================================
  40     ContentComponent (const String& name, const String& instructions_, FileBrowserComponent& chooserComponent_)
  41         : Component (name),
  42           chooserComponent (chooserComponent_),
  43           okButton (chooserComponent_.getActionVerb()),
  44           cancelButton (TRANS ("Cancel")),
  45           newFolderButton (TRANS ("New Folder")),
  46           instructions (instructions_)
  47     {
  48         addAndMakeVisible (&chooserComponent);
  49
  50         addAndMakeVisible (&okButton);
  51         okButton.addShortcut (KeyPress::returnKey);
  52
  53         addAndMakeVisible (&cancelButton);
  54         cancelButton.addShortcut (KeyPress::escapeKey);
  55
  56         addChildComponent (&newFolderButton);
  57
  58         setInterceptsMouseClicks (false, true);
  59     }
  60
  61     void paint (Graphics& g)
  62     {
  63         g.setColour (getLookAndFeel().findColour (FileChooserDialogBox::titleTextColourId));
  64         text.draw (g);
  65     }
  66
  67     void resized()
  68     {
  69         const int buttonHeight = 26;
  70
  71         Rectangle<int> area (getLocalBounds());
  72
  73         getLookAndFeel().createFileChooserHeaderText (getName(), instructions, text, getWidth());
  74         const Rectangle<float> bb (text.getBoundingBox (0, text.getNumGlyphs(), false));
  75         area.removeFromTop (roundToInt (bb.getBottom()) + 10);
  76
  77         chooserComponent.setBounds (area.removeFromTop (area.getHeight() - buttonHeight - 20));
  78         Rectangle<int> buttonArea (area.reduced (16, 10));
  79
  80         okButton.changeWidthToFitText (buttonHeight);
  81         okButton.setBounds (buttonArea.removeFromRight (okButton.getWidth() + 16));
  82
  83         buttonArea.removeFromRight (16);
  84
  85         cancelButton.changeWidthToFitText (buttonHeight);
  86         cancelButton.setBounds (buttonArea.removeFromRight (cancelButton.getWidth()));
  87
  88         newFolderButton.changeWidthToFitText (buttonHeight);
  89         newFolderButton.setBounds (buttonArea.removeFromLeft (newFolderButton.getWidth()));
  90     }
  91
  92     FileBrowserComponent& chooserComponent;
  93     TextButton okButton, cancelButton, newFolderButton;
  94
  95 private:
  96     String instructions;
  97     GlyphArrangement text;
  98 };
  99
 100 //==============================================================================
 101 FileChooserDialogBox::FileChooserDialogBox (const String& name,
 102                                             const String& instructions,
 103                                             FileBrowserComponent& chooserComponent,
 104                                             const bool warnAboutOverwritingExistingFiles_,
 105                                             const Colour& backgroundColour)
 106     : ResizableWindow (name, backgroundColour, true),
 107       warnAboutOverwritingExistingFiles (warnAboutOverwritingExistingFiles_)
 108 {
 109     content = new ContentComponent (name, instructions, chooserComponent);
 110     setContentOwned (content, false);
 111
 112     setResizable (true, true);
 113     setResizeLimits (300, 300, 1200, 1000);
 114
 115     content->okButton.addListener (this);
 116     content->cancelButton.addListener (this);
 117     content->newFolderButton.addListener (this);
 118     content->chooserComponent.addListener (this);
 119
 120     FileChooserDialogBox::selectionChanged();
 121 }
 122
 123 FileChooserDialogBox::~FileChooserDialogBox()
 124 {
 125     content->chooserComponent.removeListener (this);
 126 }
 127
 128 //==============================================================================
 129 #if JUCE_MODAL_LOOPS_PERMITTED
 130 bool FileChooserDialogBox::show (int w, int h)
 131 {
 132     return showAt (-1, -1, w, h);
 133 }
 134
 135 bool FileChooserDialogBox::showAt (int x, int y, int w, int h)
 136 {
 137     if (w <= 0)
 138     {
 139         Component* const previewComp = content->chooserComponent.getPreviewComponent();
 140
 141         if (previewComp != nullptr)
 142             w = 400 + previewComp->getWidth();
 143         else
 144             w = 600;
 145     }
 146
 147     if (h <= 0)
 148         h = 500;
 149
 150     if (x < 0 || y < 0)
 151         centreWithSize (w, h);
 152     else
 153         setBounds (x, y, w, h);
 154
 155     const bool ok = (runModalLoop() != 0);
 156     setVisible (false);
 157     return ok;
 158 }
 159 #endif
 160
 161 void FileChooserDialogBox::centreWithDefaultSize (Component* componentToCentreAround)
 162 {
 163     Component* const previewComp = content->chooserComponent.getPreviewComponent();
 164
 165     centreAroundComponent (componentToCentreAround,
 166                            previewComp != nullptr ? 400 + previewComp->getWidth() : 600,
 167                            500);
 168 }
 169
 170 //==============================================================================
 171 void FileChooserDialogBox::buttonClicked (Button* button)
 172 {
 173     if (button == &(content->okButton))
 174     {
 175         okButtonPressed();
 176     }
 177     else if (button == &(content->cancelButton))
 178     {
 179         closeButtonPressed();
 180     }
 181     else if (button == &(content->newFolderButton))
 182     {
 183         createNewFolder();
 184     }
 185 }
 186
 187 void FileChooserDialogBox::closeButtonPressed()
 188 {
 189     setVisible (false);
 190 }
 191
 192 void FileChooserDialogBox::selectionChanged()
 193 {
 194     content->okButton.setEnabled (content->chooserComponent.currentFileIsValid());
 195
 196     content->newFolderButton.setVisible (content->chooserComponent.isSaveMode()
 197                                           && content->chooserComponent.getRoot().isDirectory());
 198 }
 199
 200 void FileChooserDialogBox::fileClicked (const File&, const MouseEvent&)
 201 {
 202 }
 203
 204 void FileChooserDialogBox::fileDoubleClicked (const File&)
 205 {
 206     selectionChanged();
 207     content->okButton.triggerClick();
 208 }
 209
 210 void FileChooserDialogBox::okToOverwriteFileCallback (int result, FileChooserDialogBox* box)
 211 {
 212     if (result != 0 && box != nullptr)
 213         box->exitModalState (1);
 214 }
 215
 216 void FileChooserDialogBox::okButtonPressed()
 217 {
 218     if (warnAboutOverwritingExistingFiles
 219          && content->chooserComponent.isSaveMode()
 220          && content->chooserComponent.getSelectedFile(0).exists())
 221     {
 222         AlertWindow::showOkCancelBox (AlertWindow::WarningIcon,
 223                                          TRANS("File already exists"),
 224                                          TRANS("There's already a file called:")
 225                                            + "\n\n" + content->chooserComponent.getSelectedFile(0).getFullPathName()
 226                                            + "\n\n" + TRANS("Are you sure you want to overwrite it?"),
 227                                          TRANS("overwrite"),
 228                                          TRANS("cancel"),
 229                                       this,
 230                                       ModalCallbackFunction::forComponent (okToOverwriteFileCallback, this));
 231     }
 232     else
 233     {
 234         exitModalState (1);
 235     }
 236 }
 237
 238 void FileChooserDialogBox::createNewFolderCallback (int result, FileChooserDialogBox* box,
 239                                                     Component::SafePointer<AlertWindow> alert)
 240 {
 241     if (result != 0 && alert != nullptr && box != nullptr)
 242     {
 243         alert->setVisible (false);
 244         box->createNewFolderConfirmed (alert->getTextEditorContents ("name"));
 245     }
 246 }
 247
 248 void FileChooserDialogBox::createNewFolder()
 249 {
 250     File parent (content->chooserComponent.getRoot());
 251
 252     if (parent.isDirectory())
 253     {
 254         AlertWindow* aw = new AlertWindow (TRANS("New Folder"),
 255                                            TRANS("Please enter the name for the folder"),
 256                                            AlertWindow::NoIcon, this);
 257
 258         aw->addTextEditor ("name", String::empty, String::empty, false);
 259         aw->addButton (TRANS("ok"), 1, KeyPress::returnKey);
 260         aw->addButton (TRANS("cancel"), KeyPress::escapeKey);
 261
 262         aw->enterModalState (true,
 263                              ModalCallbackFunction::forComponent (createNewFolderCallback, this,
 264                                                                   Component::SafePointer<AlertWindow> (aw)),
 265                              true);
 266     }
 267 }
 268
 269 void FileChooserDialogBox::createNewFolderConfirmed (const String& nameFromDialog)
 270 {
 271     const String name (File::createLegalFileName (nameFromDialog));
 272
 273     if (! name.isEmpty())
 274     {
 275         const File parent (content->chooserComponent.getRoot());
 276
 277         if (! parent.getChildFile (name).createDirectory())
 278         {
 279             AlertWindow::showMessageBoxAsync (AlertWindow::WarningIcon,
 280                                               TRANS ("New Folder"),
 281                                               TRANS ("Couldn't create the folder!"));
 282         }
 283
 284         content->chooserComponent.refresh();
 285     }
 286 }
 287
 288
 289 END_JUCE_NAMESPACE