[evolution/wip/mcrha/webkit-jsc-api] e-editor.js: Change how indent is done

[Milan Crha <mcrha src gnome org>]

commit d5fe86412f5e0f720e6e6a6246e25df31b75fd6f
Author: Milan Crha <mcrha redhat com>
Date:   Thu Nov 7 10:59:08 2019 +0100

    e-editor.js: Change how indent is done
    
    The textIndent style property works only on the first line of the paragraph.

 data/webkit/e-editor.js | 59 +++++++++++++++++++++++--------------------------
 1 file changed, 28 insertions(+), 31 deletions(-)
---
diff --git a/data/webkit/e-editor.js b/data/webkit/e-editor.js
index 635b813f1c..c042325b65 100644
--- a/data/webkit/e-editor.js
+++ b/data/webkit/e-editor.js
@@ -253,23 +253,24 @@ EvoEditor.maybeUpdateFormattingState = function(force)
                }
 
                if (obj.indented == null) {
-                       tmp = parent.style.textIndent;
-                       if (tmp && tmp.endsWith("ch")) {
-                               tmp = parseInt(tmp.slice(0, -2));
-                       } else {
-                               /* for backward compatibility */
+                       var dir = window.getComputedStyle(parent).direction;
+
+                       if (dir == "rtl") {
+                               tmp = parent.style.marginRight;
+                               if (tmp && tmp.endsWith("ch")) {
+                                       tmp = parseInt(tmp.slice(0, -2));
+                               } else {
+                                       tmp = "";
+                               }
+                       } else { // "ltr" or other
                                tmp = parent.style.marginLeft;
                                if (tmp && tmp.endsWith("ch")) {
                                        tmp = parseInt(tmp.slice(0, -2));
                                } else {
-                                       tmp = parent.style.marginRight;
-                                       if (tmp && tmp.endsWith("ch")) {
-                                               tmp = parseInt(tmp.slice(0, -2));
-                                       } else {
-                                               tmp = "";
-                                       }
+                                       tmp = "";
                                }
                        }
+
                        if (Number.isInteger(tmp)) {
                                obj.indented = tmp > 0;
                        }
@@ -967,11 +968,9 @@ EvoEditor.applyIndent = function(record, isUndo)
                        if (isUndo) {
                                child.style.marginLeft = change.beforeMarginLeft;
                                child.style.marginRight = change.beforeMarginRight;
-                               child.style.textIndent = change.beforeTextIndent;
                        } else {
                                child.style.marginLeft = change.afterMarginLeft;
                                child.style.marginRight = change.afterMarginRight;
-                               child.style.textIndent = change.afterTextIndent;
                        }
                }
        }
@@ -997,27 +996,20 @@ EvoEditor.Indent = function(increment)
                                change.path = EvoSelection.GetChildPath(parent, element);
                                change.beforeMarginLeft = element.style.marginLeft;
                                change.beforeMarginRight = element.style.marginRight;
-                               change.beforeTextIndent = element.style.textIndent;
 
                                traversar.record.changes[traversar.record.changes.length] = change;
                        }
 
-                       var currValue = null;
+                       var currValue = null, dir;
 
-                       /* margin is used only for backward compatibility */
-                       if (element.style.textIndent.endsWith("ch")) {
-                               currValue = element.style.textIndent;
+                       dir = window.getComputedStyle(element).direction;
 
-                               if (element.style.marginLeft.endsWith("ch"))
-                                       element.style.marginLeft = "";
+                       if (dir == "rtl") {
                                if (element.style.marginRight.endsWith("ch"))
-                                       element.style.marginRight = "";
-                       } else if (element.style.marginLeft.endsWith("ch")) {
-                               currValue = element.style.marginLeft;
-                               element.style.marginLeft = "";
-                       } else if (element.style.marginRight.endsWith("ch")) {
-                               currValue = element.style.marginRight;
-                               element.style.marginRight = "";
+                                       currValue = element.style.marginRight;
+                       } else { // "ltr" or other
+                               if (element.style.marginLeft.endsWith("ch"))
+                                       currValue = element.style.marginLeft;
                        }
 
                        if (!currValue) {
@@ -1029,17 +1021,22 @@ EvoEditor.Indent = function(increment)
                        }
 
                        if (traversar.increment) {
-                               element.style.textIndent = (currValue + EvoEditor.TEXT_INDENT_SIZE) + "ch";
+                               currValue = (currValue + EvoEditor.TEXT_INDENT_SIZE) + "ch";
                        } else if (currValue > EvoEditor.TEXT_INDENT_SIZE) {
-                               element.style.textIndent = (currValue - EvoEditor.TEXT_INDENT_SIZE) + "ch";
+                               currValue = (currValue - EvoEditor.TEXT_INDENT_SIZE) + "ch";
                        } else if (currValue > 0) {
-                               element.style.textIndent = "";
+                               currValue = "";
+                       }
+
+                       if (dir == "rtl") {
+                               element.style.marginRight = currValue;
+                       } else { // "ltr" or other
+                               element.style.marginLeft = currValue;
                        }
 
                        if (change) {
                                change.afterMarginLeft = element.style.marginLeft;
                                change.afterMarginRight = element.style.marginRight;
-                               change.afterTextIndent = element.style.textIndent;
                        }
 
                        return true;