[Doc] Update rofi-theme documentation.

allow `content` as alias to `str` on textbox.

doc/rofi-theme.5.markdown

@@ -64,7 +64,7 @@ name
 The preferred file extension for the new theme format is **rasi**. This is an
 abbreviation for **r**ofi **a**dvanced **s**tyle **i**nformation.
 
-## BASIC STRUCTURE
+## Basic Structure
 
 Each element has a section with defined properties. Global properties can be defined in section `* { }`.
 Sub-section names begin with a hash symbol `#`.
@@ -137,6 +137,7 @@ In the following example:
 window {
  a: 1;
  b: 2;
+ children: [ mainbox ];
 }
 mainbox {
     a: inherit;
@@ -157,7 +158,7 @@ If multiple sections are defined with the same name, they are merged by the
 parser. If multiple properties with the same name are defined in one section,
 the last encountered property is used.
 
-## PROPERTIES FORMAT
+## Properties Format
 
 The properties in a section consist of:
 
@@ -359,7 +360,7 @@ and right side and 108 pixels on the top and bottom.
 * Format: `{Distance} {Distance} {Distance}`
 * Format: `{Distance} {Distance} {Distance} {Distance}`
 
-If no unit is specified, pixels are used.
+If no unit is specified, pixels are assumed.
 
 The different number of fields in the formats are parsed like:
 
@@ -384,6 +385,8 @@ The different number of fields in the formats are parsed like:
 Borders are identical to padding, except that each distance field has a line
 style property.
 
+> When no unit is specified, pixels are assumed.
+
 ## Position
 
 Indicate a place on the window/monitor.
@@ -509,16 +512,20 @@ The current widgets available in **rofi**:
       * `case-indicator`: the case/sort indicator @textbox
       * `prompt`: the prompt @textbox
       * `entry`: the main entry @textbox
+      * `num-rows`: Shows the total number of rows.
+      * `num-filtered-rows`: Shows the total number of rows after filtering.
     * `listview`: The listview.
        * `scrollbar`: the listview scrollbar
-       * `element`: the entries in the listview
+       * `element`: a box in the listview holding the entries
+       * `element-icon`: the widget in the listview's entry showing the (optional) icon
+       * `element-text`: the widget in the listview's entry showing the text.
     * `mode-switcher`: the main horizontal @box packing the buttons.
       * `button`: the buttons @textbox for each mode
     * `message`: The container holding the textbox.
       * `textbox`: the message textbox
 
 Note that these path names match the default theme. Themes that provide a custom layout will have different
-element paths.
+elements, and structure.
 
 
 ## State
@@ -590,7 +597,6 @@ The following properties are currently supported:
   Background color
 * **border-color**:      color
   Color of the border
-* **index**:           integer  (This one does not inherit it value from the parent widget)
 
 ### window:
 
@@ -635,14 +641,16 @@ The following properties are currently supported:
 
 * **background-color**:       color
 * **border-color**:     the color used for the border around the widget.
-* **font**:             the font used by this textbox (string)
-* **str**:              the string to display by this textbox (string)
-* **vertical-align**:   vertical alignment of the text (`0` top, `1` bottom)
-* **horizontal-align**: horizontal alignment of the text (`0` left, `1` right)
-* **text-color**:       the text color to use 
-* **highlight**:        text style {color}
+* **font**:             the font used by this textbox (string).
+* **str**:              the string to display by this textbox (string).
+* **vertical-align**:   vertical alignment of the text (`0` top, `1` bottom).
+* **horizontal-align**: horizontal alignment of the text (`0` left, `1` right).
+* **text-color**:       the text color to use.
+* **highlight**:        text style {color}.
     color is optional, multiple highlight styles can be added like: bold underline italic #000000;
-* **width**:            override the desired width for the textbox
+* **width**:            override the desired width for the textbox.
+* **content**:          Set the displayed text (String). 
+* **blink**:            Enable/Disable blinking on an input textbox (Boolean).
 
 ### listview:
 * **columns**:         integer
@@ -663,6 +671,12 @@ The following properties are currently supported:
     Number of rows to show in the list view.
 * **layout**:           orientation
     Indicate how elements are stacked. Horizontal implements the dmenu style.
+* **reverse**:         boolean
+    Reverse the ordering (top down to bottom up).
+* **fixed-columns**:    boolean
+    Do not reduce the number of columns shown when number of visible elements is not enough to fill them all.
+
+Each element is a `box` called `element`. Each `element` can contain an `element-icon` and `element-text`.
 
 ## Layout
 

source/widgets/textbox.c

@@ -189,6 +189,9 @@ textbox* textbox_create ( widget *parent, WidgetType type, const char *name, Tex
     }
 
     const char *txt = rofi_theme_get_string ( WIDGET  ( tb ), "str", text );
+    if ( !txt ){
+        txt = rofi_theme_get_string ( WIDGET  ( tb ), "content", text );
+    }
     textbox_text ( tb, txt ? txt : "" );
     textbox_cursor_end ( tb );