Implement ordered list with start

Implement ordered reversed list
Implement ordered reversed list with start

Author: marecar3

app/src/main/kotlin/org/wordpress/aztec/demo/MainActivity.kt

@@ -91,6 +91,24 @@ open class MainActivity : AppCompatActivity(),
         private val UNDERLINE = "<u style=\"color:lime\">Underline</u><br>"
         private val STRIKETHROUGH = "<s style=\"color:#ff666666\" class=\"test\">Strikethrough</s><br>" // <s> or <strike> or <del>
         private val ORDERED = "<ol style=\"color:green\"><li>Ordered</li><li>should have color</li></ol>"
+        private val ORDERED_WITH_START = "<h4>Start in 10 List:</h4>" +
+                "<ol start=\"10\">\n" +
+                "    <li>Ten</li>\n" +
+                "    <li>Eleven</li>\n" +
+                "    <li>Twelve</li>\n" +
+                "</ol>"
+        private val ORDERED_REVERSED = "<h4>Reversed List:</h4>" +
+                "<ol reversed>\n" +
+                "    <li>Three</li>\n" +
+                "    <li>Two</li>\n" +
+                "    <li>One</li>\n" +
+                "</ol>"
+        private val ORDERED_REVERSED_WITH_START = "<h4>Reversed Start in 10 List:</h4>" +
+                "<ol reversed start=\"10\">\n" +
+                "    <li>Ten</li>\n" +
+                "    <li>Nine</li>\n" +
+                "    <li>Eight</li>\n" +
+                "</ol>"
         private val LINE = "<hr />"
         private val UNORDERED = "<ul><li style=\"color:darkred\">Unordered</li><li>Should not have color</li></ul>"
         private val QUOTE = "<blockquote>Quote</blockquote>"
@@ -147,6 +165,9 @@ open class MainActivity : AppCompatActivity(),
                         UNDERLINE +
                         STRIKETHROUGH +
                         ORDERED +
+                        ORDERED_WITH_START +
+                        ORDERED_REVERSED +
+                        ORDERED_REVERSED_WITH_START +
                         LINE +
                         UNORDERED +
                         QUOTE +

aztec/src/main/kotlin/org/wordpress/aztec/spans/AztecListSpan.kt

@@ -65,6 +65,19 @@ abstract class AztecListSpan(override var nestingLevel: Int,
                 .size
     }
 
+    fun getNumberOfItemsInProcessedLine(text: CharSequence): Int {
+        val spanStart = (text as Spanned).getSpanStart(this)
+        val spanEnd = text.getSpanEnd(this)
+
+        val listText = text.subSequence(spanStart, spanEnd) as Spanned
+
+        return if (listText.length == 0) {
+            0
+        } else {
+            listText.split("\n").size
+        }
+    }
+
     fun nestingDepth(text: Spanned, index: Int, nextIndex: Int): Int {
         val finalNextIndex = if (nextIndex > text.length) index else nextIndex
         return IAztecNestable.getNestingLevelAt(text, index, finalNextIndex)

aztec/src/main/kotlin/org/wordpress/aztec/spans/AztecOrderedListSpan.kt

@@ -55,7 +55,22 @@ class AztecOrderedListSpan(
         p.color = listStyle.indicatorColor
         p.style = Paint.Style.FILL
 
-        val lineIndex = getIndexOfProcessedLine(text, end)
+        var start = if (attributes.hasAttribute("start") == true) {
+            attributes.getValue("start").toInt()
+        } else {
+            0
+        }
+
+        val isReversed = attributes.hasAttribute("reversed")
+        var lineIndex = if (start > 0) {
+            if (isReversed) start - (getIndexOfProcessedLine(text, end) - 1)
+            else start + (getIndexOfProcessedLine(text, end) - 1)
+        } else {
+            val number = getNumberOfItemsInProcessedLine(text)
+            if (isReversed) number - (getIndexOfProcessedLine(text, end))
+            else getIndexOfProcessedLine(text, end)
+        }
+
         val textToDraw = if (lineIndex > -1) {
             if (dir >= 0) lineIndex.toString() + "."
             else "." + lineIndex.toString()