# -*- coding: utf-8 -*-

# Copyright (c) 2005 - 2019 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing a QSS lexer with some additional methods.
"""


from PyQt5.Qsci import QsciLexerCSS

from .Lexer import Lexer
import Preferences


class LexerQSS(Lexer, QsciLexerCSS):
    """
    Subclass to implement some additional lexer dependent methods.
    """
    def __init__(self, parent=None):
        """
        Constructor
        
        @param parent parent widget of this lexer
        """
        QsciLexerCSS.__init__(self, parent)
        Lexer.__init__(self)
        
        self.commentString = "#"
        self.streamCommentString = {
            'start': '/* ',
            'end': ' */'
        }
        
        self.keywordSetDescriptions = [
            self.tr("CSS1 Properties"),
            self.tr("Pseudo-Classes"),
            self.tr("CSS2 Properties"),
            self.tr("CSS3 Properties"),
            self.tr("Pseudo-Elements"),
            self.tr("Browser-Specific CSS Properties"),
            self.tr("Browser-Specific Pseudo-Classes"),
            self.tr("Browser-Specific Pseudo-Elements"),
        ]
    
    def initProperties(self):
        """
        Public slot to initialize the properties.
        """
        self.setFoldComments(Preferences.getEditor("CssFoldComment"))
        self.setFoldCompact(Preferences.getEditor("AllFoldCompact"))
        try:
            self.setHSSLanguage(
                Preferences.getEditor("CssHssSupport"))
            self.setLessLanguage(
                Preferences.getEditor("CssLessSupport"))
            self.setSCSSLanguage(
                Preferences.getEditor("CssSassySupport"))
        except AttributeError:
            pass
    
    def isCommentStyle(self, style):
        """
        Public method to check, if a style is a comment style.
        
        @param style style to check (integer)
        @return flag indicating a comment style (boolean)
        """
        return style in [QsciLexerCSS.Comment]
    
    def isStringStyle(self, style):
        """
        Public method to check, if a style is a string style.
        
        @param style style to check (integer)
        @return flag indicating a string style (boolean)
        """
        return style in [QsciLexerCSS.DoubleQuotedString,
                         QsciLexerCSS.SingleQuotedString]
    
    def defaultKeywords(self, kwSet):
        """
        Public method to get the default keywords.
        
        @param kwSet number of the keyword set (integer)
        @return string giving the keywords (string) or None
        """
        if kwSet == 1:
            return (
                "alternate-background-color background background-color"
                " background-image background-repeat background-position"
                " background-attachment background-clip background-origin"
                " border border-top border-right border-bottom border-left"
                " border-color border-top-color border-right-color"
                " border-bottom-color border-left-color border-image"
                " border-radius border-top-left-radius"
                " border-top-right-radius border-bottom-right-radius"
                " border-bottom-left-radius border-style border-top-style"
                " border-right-style border-bottom-style border-left-style"
                " border-width border-top-width border-right-width"
                " border-bottom-width border-left-width bottom button-layout"
                " color dialogbuttonbox-buttons-have-icons font font-family"
                " font-size font-style font-weight gridline-color"
                " height icon-size image image-position left"
                " lineedit-password-character margin margin-top margin-right"
                " margin-bottom margin-left max-height max-width"
                " messagebox-text-interaction-flags min-height min-width"
                " opacity outline padding padding-top padding-right"
                " padding-bottom padding-left"
                " paint-alternating-row-colors-for-empty-area"
                " position right selection-background-color selection-color"
                " show-decoration-selected spacing subcontrol-origin"
                " subcontrol-position text-align text-decoration"
                " top width"
                ""
                " backward-icon cd-icon computer-icon desktop-icon"
                " dialog-apply-icon dialog-cancel-icon dialog-close-icon"
                " dialog-discard-icon dialog-help-icon dialog-no-icon"
                " dialog-ok-icon dialog-open-icon dialog-reset-icon"
                " dialog-save-icon dialog-yes-icon directory-closed-icon"
                " directory-icon directory-link-icon directory-open-icon"
                " dockwidget-close-icon downarrow-icon dvd-icon file-icon"
                " file-link-icon filedialog-contentsview-icon"
                " filedialog-detailedview-icon filedialog-end-icon"
                " filedialog-infoview-icon filedialog-listview-icon"
                " filedialog-new-directory-icon"
                " filedialog-parent-directory-icon filedialog-start-icon"
                " floppy-icon forward-icon harddisk-icon home-icon"
                " leftarrow-icon messagebox-critical-icon"
                " messagebox-information-icon messagebox-question-icon"
                " messagebox-warning-icon network-icon rightarrow-icon"
                " titlebar-contexthelp-icon titlebar-maximize-icon"
                " titlebar-menu-icon titlebar-minimize-icon"
                " titlebar-normal-icon titlebar-shade-icon"
                " titlebar-unshade-icon trash-icon uparrow-icon"
            )
        elif kwSet == 2:
            return (
                "active adjoins-item alternate bottom checked closable"
                " closed default disabled editable edit-focus enabled"
                " exclusive first flat floatable focus has-children"
                " has-siblings horizontal hover indeterminate last left"
                " maximized middle minimized movable no-frame"
                " non-exclusive off on only-one open next-selected"
                " pressed previous-selected read-only right selected top"
                " unchecked vertical window"
                ""
                " add-line add-page branch chunk close-button corner"
                " down-arrow down-button drop-down float-button groove"
                " indicator handle icon item left-arrow left-corner"
                " menu-arrow menu-button menu-indicator right-arrow"
                " pane right-corner scroller section separator sub-line"
                " sub-page tab tab-bar tear tearoff text title up-arrow"
                " up-button"
            )
        
        return None
    
    def language(self):
        """
        Public method to return the lexer language.
        
        @return lexer language (string)
        """
        return "QSS"
    
    def lexerName(self):
        """
        Public method to return the lexer name.
        
        @return lexer name (string)
        """
        return "QSS"
