Class: Eiwaji::LexerWidget

Inherits:
Qt::DockWidget
  • Object
show all
Defined in:
lib/lexer_widget.rb

Defined Under Namespace

Modules: Underscore

Constant Summary collapse

POS_IGNORE =

parts-of-speech to not provide hyperlinks for

[Ve::PartOfSpeech::Symbol]
HISTORY_STRING_LENGTH = 
30
MAX_HISTORY_ITEMS = 
50

Instance Method Summary collapse

Constructor Details

#initialize(parent) ⇒ LexerWidget

Returns a new instance of LexerWidget.



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# File 'lib/lexer_widget.rb', line 15

def initialize(parent)
  super(parent)
  
  @ui = Ui_LexerWidget.new
  @ui.setupUi(self)

  part_of_speech_colors

  connect(@ui.lexerTextBrowser, SIGNAL('anchorClicked(QUrl)'),
          self, SLOT('wordClicked(QUrl)'))

  @ui.historyBox.insertItem(0, "...")
  connect(@ui.historyBox, SIGNAL('currentIndexChanged(int)'), self, SLOT('historyItemChanged(int)'))
  connect(@ui.buttonNext, SIGNAL('clicked()'), self, SLOT('historyNext()'))
  connect(@ui.buttonPrev, SIGNAL('clicked()'), self, SLOT('historyPrev()'))
end

Instance Method Details

#event(event) ⇒ Object 



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# File 'lib/lexer_widget.rb', line 36

def event(event)
  # provide tooltips for word part-of-speech when mousing over hrefs
  if event.type == Qt::Event::ToolTip
    cursor = @ui.lexerTextBrowser.cursorForPosition(event.pos)
    cursor.select(Qt::TextCursor::WordUnderCursor)
    fragment = cursor.selection()

    # works in this case, since the input is clearly defined in wordToHtml
    hrefRegex = /<a\s+(?:[^>]*?\s+)?href="([^"]*)"/
    resultsIndex = hrefRegex.match(fragment.toHtml)

    if not resultsIndex or resultsIndex.size != 2
      Qt::ToolTip.hideText
    else
      word = @lexer_results[resultsIndex[1].to_i]
      Qt::ToolTip.showText(event.globalPos(), word.lemma + " " + word.part_of_speech.name)
    end
  end
  super(event)
end

#historyItemChanged(index) ⇒ Object 



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# File 'lib/lexer_widget.rb', line 57

def historyItemChanged(index)
  return if index == 0
  text = @ui.historyBox.itemData(index).value
  lexText(text)
end

#historyNext ⇒ Object 



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# File 'lib/lexer_widget.rb', line 70

def historyNext
  index = @ui.historyBox.currentIndex - 1
  index = 1 if index < 1
  @ui.historyBox.setCurrentIndex(index)
end

#historyPrev ⇒ Object 



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# File 'lib/lexer_widget.rb', line 63

def historyPrev
  index = @ui.historyBox.currentIndex + 1
  index += 1 if @ui.historyBox.currentIndex == 0
  index = @ui.historyBox.count - 1 if index >= @ui.historyBox.count - 1
  @ui.historyBox.setCurrentIndex(index)
end

#lexText(text, append_to_history = false) ⇒ Object 



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# File 'lib/lexer_widget.rb', line 76

def lexText(text, append_to_history=false)
  text = text.force_encoding("UTF-8")

  if append_to_history
    @ui.historyBox.setCurrentIndex(0)
    truncated_text = text.size < HISTORY_STRING_LENGTH ? text : text[0..HISTORY_STRING_LENGTH-1] + "..."
    @ui.historyBox.insertItem(1, truncated_text, Qt::Variant.new(text)) 
    @ui.historyBox.removeItem(MAX_HISTORY_ITEMS+1) if @ui.historyBox.count > MAX_HISTORY_ITEMS+1
  end

  lines = text.split("\n")
  html_lines = []
  @lexer_results = Hash.new
  i = 0

  lines.each do |line|
    words = Ve.in(:ja).words(line)
    html_words = []

    words.each do |word|
      @lexer_results[i] = word
      html_words << wordToHtml(word, i)
      i = i + 1
    end
    html_lines << "<div style='margin-bottom: 20px'>" + html_words.join(' ') + "<\div>"
  end

  html = html_lines.join("")

  @ui.lexerTextBrowser.setText(html)
end

#part_of_speech_colors ⇒ Object

each symbol represents the class name of a Ve::PartOfSpeech



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# File 'lib/lexer_widget.rb', line 133

def part_of_speech_colors
  @part_of_speech_colors ||= {
    :verb => "#808080",
    :noun => "#000000",
    :proper_noun => "#0000FF",
    :symbol => "#000000",
    :postposition => "#FF0000",
    :pronoun => "#008080",
    :adjective => "#008000",
    :adverb => "#43C6DB",
    :conjunction => "#FFA500",
    :background => "#FFFFFF",
    :default => "#FF00FF"
  }
end

#searchWord(ref) ⇒ Object 



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# File 'lib/lexer_widget.rb', line 112

def searchWord(ref)
  raise "No results from the lexer." if @lexer_results.empty?
  word = @lexer_results[ref]

  # Word lemma
  # since the lemmas of Words like "1話" become "*話", remove extra '*'s
  lemma = word.lemma.tr('*','')

  # raw token, drops "する" and other extra parts
  query = word.tokens[0][:lemma]
  query = lemma if query == "*"

  if Eiwaji::DEBUG
    p word, query, lemma
  end

  # search on the query and sort by the results most similar to the lemma
  parent.search(query, lemma)
end

#textBrowser ⇒ Object 



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# File 'lib/lexer_widget.rb', line 32

def textBrowser
  @ui.textBrowser
end

#wordClicked(url) ⇒ Object 



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# File 'lib/lexer_widget.rb', line 108

def wordClicked(url)
  searchWord(url.path.to_i)
end

#wordToHtml(word, index) ⇒ Object

converts a Ve::Word and its index in the search results to a String representation



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# File 'lib/lexer_widget.rb', line 150

def wordToHtml(word, index)
  raw = word.word
  pos = word.part_of_speech
  color = @part_of_speech_colors[pos.name.gsub(' ', '_').underscore.to_sym] || @part_of_speech_colors[:default]
  
  if POS_IGNORE.include? pos
    raw = "<font style='color: #{color}'>" + raw + "</font>"
  else
    raw = "<a href=\'#{index}\' style='color: #{color}'>" + raw + "</a>"
  end
end