/*
 * all lowpro behaviors
 */


CheckBoxToggle = $.klass({
  initialize: function(toggle_selector) {
    this.toggle_selector = toggle_selector;
  },

  onclick: function() {
    var to_toggle = this.element[0].checked;
    $(this.toggle_selector + ' input[type=checkbox]').each(function(index) {
      $(this)[0].checked = to_toggle;
    });
  }
});

/*
 * use like:
 *
 * $('.some_category_field').attach(SelectPopper, '#div_with_ul');
 * $('#div_with_ul').attach(SetSelector, '.some_category_field');
 *
 */

SelectPopper = $.klass({
  // provide array of select_options
  // TODO: detect a hash and use it to do option text/value
  initialize: function(select_options) {
    if(select_options.length > 0) {
      var _a_ul = $('<ul/>', { style : 'list-style-type: none; margin: 0' } );
      $.each(select_options, function(index, value) {
        $('<li/>', { text : value, style : "padding: 3px;" }).appendTo(_a_ul);
      });

      this.select_box = $('<div/>', { style : 'display:none; background: white; border: 1px solid #999;',
        "class" : "select_popper_box" } );
      _a_ul.appendTo(this.select_box);
      this.select_box.appendTo('body');
      this.select_box.attach(SetSelector, this.element);
    }
  },

  onfocus: function(e) {
    if(this.select_box) {
      this.select_box.clonePosition(this.element, { cloneHeight: false, offsetLeft: 1, offsetTop: this.element.height() });
      this.select_box.css('width', (this.element.offsetWidth - 2) + 'px');
      this.select_box.show();
    }
  },

  onblur: function(e) {
    if(this.select_box) {
      var _select_box = this.select_box;
      setTimeout(function() {
        _select_box.hide();
      }, 250);
    }
  }
});

SetSelector = $.klass({
  initialize: function(input_element) {
    this.select_field = $(input_element);
  },

  onclick: $.delegate({
    'li': function(click_target) {
      this.select_field.val(click_target.text());
      this.element.hide();
    }
  })
});


TextareaExpander = $.klass({
  initialize: function(pixelsToGrowBy, maxHeight) {
    this.pixelsToGrowBy = (typeof pixelsToGrowBy == 'undefined') ? 20 : pixelsToGrowBy;
    this.maxHeight = (typeof maxHeight == 'undefined') ? 999 : maxHeight;
    // run it once to blow up any textareas on first page load
    this.onkeypress();
  },

  onkeypress: function(e) {
    var curr_h = this.element.height();
    var scroll_h = this.element[0].scrollHeight;
    while(curr_h < scroll_h && curr_h < this.maxHeight) {
      this.element.css( { 'height': (curr_h + this.pixelsToGrowBy) + 'px' });
      curr_h = this.element.height();
      scroll_h = this.element[0].scrollHeight;
    }
  }
});


ShowHideLink = $.klass({
  initialize: function(options) {
    options = options || {};
    this.showEffect = options.show_effect;
    this.hideEffect = options.hide_effect;
    this.showEffectParams = options.show_effect_params;
    this.hideEffectParams = options.hide_effect_params;
    this.showClassName = $.string(this.element[0].href).toQueryParams()['show'];
    this.hideClassName = $.string(this.element[0].href).toQueryParams()['hide'];
    this.toggleClassName = $.string(this.element[0].href).toQueryParams()['toggle'];
    this.hideMe = options.hide_me;
    this.doNotStop = options.do_not_stop || false;
    this.myToggleClass = options.my_toggle_class;
  },

  onclick: function(e) {
    if(this.hideClassName) {
      //$('.'+this.hideClassName).invoke(this.hideEffect || 'hide', this.hideEffectParams);
      $('.'+this.hideClassName).hide();
    }
    if(this.showClassName) {
      //$('.'+this.showClassName).invoke(this.showEffect || 'show', this.showEffectParams);
      $('.'+this.showClassName).show();
    }
    if(this.toggleClassName) {
      $('.'+this.toggleClassName).toggle();
    }
    if(this.hideMe) {
      this.element.hide();
    }
    this.element.blur();
    
    return this.doNotStop;
  }
});