'''
Task Coach - Your friendly task manager
Copyright (C) 2004-2015 Task Coach developers <developers@taskcoach.org>

Task Coach is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Task Coach is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
'''

from taskcoachlib import meta
from taskcoachlib.i18n import _
from wx.lib import sized_controls
import wx


tips = [
_('''%(name)s is actively developed. Although the %(name)s developers try hard to prevent them, bugs do happen. So, backing up your work on a regular basis is strongly advised.''') % meta.metaDict,
_('''%(name)s has a mailing list where you can discuss usage of %(name)s with fellow users, discuss and request features and complain about bugs. Go to %(url)s and join today!''') % meta.metaDict, 
_('''%(name)s has unlimited undo and redo. Any change that you make, be it editing a task description, or deleting an effort record, is undoable. Select 'Edit' -> 'Undo' and 'Edit' -> 'Redo' to go backwards and forwards through your edit history.''') % meta.metaDict, 
_('''%(name)s is available in a number of different languages. Select 'Edit' -> 'Preferences' to see whether your language is one of them. If your language is not available or the translation needs improvement, please consider helping with the translation of %(name)s. Visit %(url)s for more information about how you can help.''') % meta.metaDict,
_('''If you enter a URL (e.g. %(url)s) in a task or effort description, it becomes a link. Clicking on the link will open the URL in your default web browser.''') % meta.metaDict,
_('''You can drag and drop tasks in the tree view to rearrange parent-child relationships between tasks. The same goes for categories.'''),
_('''You can drag files from a file browser onto a task to create attachments. Dragging the files over a tab will raise the appropriate page, dragging the files over a collapsed task (the boxed + sign) in the tree view will expand the task to show its subtasks.'''),
_('''You can create any viewer layout you want by dragging and dropping the tabs. The layout is saved and reused in the next session.'''),
_('''What is actually printed when you select 'File' -> 'Print' depends on the current view. If the current view shows the task list, a list of tasks will be printed, if the current view shows effort grouped by month, that will be printed. The same goes for visible columns, sort order, filtered tasks, etc.'''),
_('''Left-click a column header to sort by that column. Click the column header again to change the sort order from ascending to descending and back again. Right-click a column header to hide that column or make additional columns visible.'''),
_('''You can create a template from a task in order to reduce typing when repetitive patterns emerge.'''),
_('''Ctrl-Tab switches between tabs in edit dialogs.''')
]


class TipProvider(object):
    def __init__(self, tip_index):
        self.__tip_index = tip_index
        
    def GetTip(self):
        tip = tips[self.__tip_index % len(tips)]
        self.__tip_index += 1 
        if self.__tip_index >= len(tips):
            self.__tip_index = 0
        return tip
    
    def GetCurrentTip(self):
        return self.__tip_index


class TipDialog(sized_controls.SizedDialog):
    ''' Create a dialog for showing the tip of the day to the user. We don't
        use the builtin tip dialog of wxPython because that's a modal 
        dialog. '''
    def __init__(self, *args, **kwargs):
        self.__tip_provider = kwargs.pop('tip_provider')
        self.__settings = kwargs.pop('settings')
        super(TipDialog, self).__init__(title=_('Tip of the day'), 
                                        *args, **kwargs)
        pane = self.GetContentsPane()
        pane.SetSizerType('horizontal')
        wx.StaticBitmap(pane, 
                        bitmap=wx.ArtProvider_GetBitmap('lamp_icon', 
                                                        wx.ART_MENU, (32, 32)))
        tip_pane = sized_controls.SizedPanel(pane)
        self.__tip = wx.StaticText(tip_pane) 
        self.__show_tip()
        next_tip_button = wx.Button(tip_pane, id=wx.ID_FORWARD, 
                                    label=_('Next tip'))
        next_tip_button.Bind(wx.EVT_BUTTON, self.on_next_tip)
        self.__check = self.__create_checkbox(tip_pane)
        button_sizer = self.CreateStdDialogButtonSizer(wx.OK)
        self.SetButtonSizer(button_sizer)
        self.Fit()
        self.CentreOnParent()
        button_sizer.GetAffirmativeButton().Bind(wx.EVT_BUTTON, self.on_close)
        self.Bind(wx.EVT_CLOSE, self.on_close)
        
    def __show_tip(self):
        ''' Show the next tip. '''
        self.__tip.SetLabel(self.__tip_provider.GetTip())
        self.__tip.Wrap(500)
        
    def __create_checkbox(self, pane):
        ''' Create a check box for users to indicate whether they want to
            see tips on startup. '''
        checkbox = wx.CheckBox(pane, label=_('Show tips on startup'))
        checkbox.SetValue(self.__settings.getboolean('window', 'tips'))
        return checkbox
    
    def on_next_tip(self, event):
        ''' Show the next tip. '''
        self.__show_tip()
        self.Fit()
        event.Skip(False)
    
    def on_close(self, event):
        ''' When users close the dialog, remember whether they want to
            see tips and what the last displayed tip was. '''
        event.Skip()
        self.__settings.setboolean('window', 'tips', self.__check.GetValue())
        self.__settings.setint('window', 'tipsindex', 
                               self.__tip_provider.GetCurrentTip())
        
        
def showTips(parent, settings):
    tip_provider = TipProvider(settings.getint('window', 'tipsindex'))
    TipDialog(parent, tip_provider=tip_provider, settings=settings).Show()
