Merge branch 'next' into cols-rows-hiding-showing-4353

Author: mafanya23

docs/api/api_overview.md

@@ -34,6 +34,8 @@ Parameters:
 | [](api/spreadsheet_eachcell_method.md)       | @getshort(api/spreadsheet_eachcell_method.md)       |
 | [](api/spreadsheet_endedit_method.md)        | @getshort(api/spreadsheet_endedit_method.md)        |
 | [](api/spreadsheet_fitcolumn_method.md)      | @getshort(api/spreadsheet_fitcolumn_method.md)      |
+| [](api/spreadsheet_freezecols_method.md)     | @getshort(api/spreadsheet_freezecols_method.md)     |
+| [](api/spreadsheet_freezerows_method.md)     | @getshort(api/spreadsheet_freezerows_method.md)     |
 | [](api/spreadsheet_getactivesheet_method.md) | @getshort(api/spreadsheet_getactivesheet_method.md) |
 | [](api/spreadsheet_getfilter_method.md)      | @getshort(api/spreadsheet_getfilter_method.md)      |
 | [](api/spreadsheet_getformat_method.md)      | @getshort(api/spreadsheet_getformat_method.md)      |
@@ -64,6 +66,8 @@ Parameters:
 | [](api/spreadsheet_showrows_method.md)       | @getshort(api/spreadsheet_showrows_method.md)       |
 | [](api/spreadsheet_startedit_method.md)      | @getshort(api/spreadsheet_startedit_method.md)      |
 | [](api/spreadsheet_undo_method.md)           | @getshort(api/spreadsheet_undo_method.md)           |
+| [](api/spreadsheet_unfreezecols_method.md)   | @getshort(api/spreadsheet_unfreezecols_method.md)   |
+| [](api/spreadsheet_unfreezerows_method.md)   | @getshort(api/spreadsheet_unfreezerows_method.md)   |
 | [](api/spreadsheet_unlock_method.md)         | @getshort(api/spreadsheet_unlock_method.md)         |
 
 ## Spreadsheet events
@@ -74,6 +78,7 @@ Parameters:
 | [](api/spreadsheet_afterclear_event.md)         | @getshort(api/spreadsheet_afterclear_event.md)         |
 | [](api/spreadsheet_aftercolumnadd_event.md)     | @getshort(api/spreadsheet_aftercolumnadd_event.md)     |
 | [](api/spreadsheet_aftercolumndelete_event.md)  | @getshort(api/spreadsheet_aftercolumndelete_event.md)  |
+| [](api/spreadsheet_afterdataloaded_event.md)    | @getshort(api/spreadsheet_afterdataloaded_event.md)    |
 | [](api/spreadsheet_aftereditend_event.md)       | @getshort(api/spreadsheet_aftereditend_event.md)       |
 | [](api/spreadsheet_aftereditstart_event.md)     | @getshort(api/spreadsheet_aftereditstart_event.md)     |
 | [](api/spreadsheet_afterfocusset_event.md)      | @getshort(api/spreadsheet_afterfocusset_event.md)      |
@@ -117,15 +122,14 @@ Parameters:
 | [](api/spreadsheet_exportmodulepath_config.md) | @getshort(api/spreadsheet_exportmodulepath_config.md) |
 | [](api/spreadsheet_formats_config.md)          | @getshort(api/spreadsheet_formats_config.md)          |
 | [](api/spreadsheet_importmodulepath_config.md) | @getshort(api/spreadsheet_importmodulepath_config.md) |
-| [](api/spreadsheet_leftsplit_config.md)        | @getshort(api/spreadsheet_leftsplit_config.md)        |
 | [](api/spreadsheet_localization_config.md)     | @getshort(api/spreadsheet_localization_config.md)     |
 | [](api/spreadsheet_menu_config.md)             | @getshort(api/spreadsheet_menu_config.md)             |
 | [](api/spreadsheet_multisheets_config.md)      | @getshort(api/spreadsheet_multisheets_config.md)      |
 | [](api/spreadsheet_readonly_config.md)         | @getshort(api/spreadsheet_readonly_config.md)         |
 | [](api/spreadsheet_rowscount_config.md)        | @getshort(api/spreadsheet_rowscount_config.md)        |
 | [](api/spreadsheet_timeformat_config.md)       | @getshort(api/spreadsheet_timeformat_config.md)       |
 | [](api/spreadsheet_toolbarblocks_config.md)    | @getshort(api/spreadsheet_toolbarblocks_config.md)    |
-| [](api/spreadsheet_topsplit_config.md)         | @getshort(api/spreadsheet_topsplit_config.md)         |
+
 
 ## Selection methods
 

docs/api/overview/actions_overview.md

@@ -75,10 +75,12 @@ spreadsheet.events.on("beforeColumnAdd", function(cell){
 | **sortCells**        | The action is executed when sorting data in spreadsheet                                                                                                                                                 |
 | **setCellStyle**     | The action is executed when changing the style of a cell                                                                                                                                                |
 | **toggleVisibility** | The action is executed when hiding/showing a column or a row                                                                                                                                            |
+| **toggleFreeze**     | The action is executed when freezing/unfreezing columns/rows                                                                                                                                            |
 | **unmerge**          | The action is executed when splitting cells                                                                                                                                                             |
 
 **Change log:**
 
+- The **toggleFreeze** and **toggleVisibility** actions were added in v5.2
 - The **merge**, **unmerge**, **filter**, **fitColumn**, **insertLink** actions were added in v5.0
 
 **Related sample:** [Spreadsheet. Actions](https://snippet.dhtmlx.com/efcuxlkt)

docs/api/overview/events_overview.md

@@ -12,6 +12,7 @@ description: You can have an Events overview of the DHTMLX JavaScript Spreadshee
 | [](../spreadsheet_afterclear_event.md)         | @getshort(../spreadsheet_afterclear_event.md)         |
 | [](../spreadsheet_aftercolumnadd_event.md)     | @getshort(../spreadsheet_aftercolumnadd_event.md)     |
 | [](../spreadsheet_aftercolumndelete_event.md)  | @getshort(../spreadsheet_aftercolumndelete_event.md)  |
+| [](../spreadsheet_afterdataloaded_event.md)  	 | @getshort(../spreadsheet_afterdataloaded_event.md)    |
 | [](../spreadsheet_aftereditend_event.md)       | @getshort(../spreadsheet_aftereditend_event.md)       |
 | [](../spreadsheet_aftereditstart_event.md)     | @getshort(../spreadsheet_aftereditstart_event.md)     |
 | [](../spreadsheet_afterfocusset_event.md)      | @getshort(../spreadsheet_afterfocusset_event.md)      |

docs/api/overview/methods_overview.md

@@ -18,6 +18,8 @@ description: You can have a Methods overview of the DHTMLX JavaScript Spreadshee
 | [](../spreadsheet_eachcell_method.md)       | @getshort(../spreadsheet_eachcell_method.md)       |
 | [](../spreadsheet_endedit_method.md)        | @getshort(../spreadsheet_endedit_method.md)        |
 | [](../spreadsheet_fitcolumn_method.md)      | @getshort(../spreadsheet_fitcolumn_method.md)      |
+| [](../spreadsheet_freezecols_method.md)     | @getshort(../spreadsheet_freezecols_method.md)     |
+| [](../spreadsheet_freezerows_method.md)     | @getshort(../spreadsheet_freezerows_method.md)     |
 | [](../spreadsheet_getactivesheet_method.md) | @getshort(../spreadsheet_getactivesheet_method.md) |
 | [](../spreadsheet_getfilter_method.md)      | @getshort(../spreadsheet_getfilter_method.md)      |
 | [](../spreadsheet_getformat_method.md)      | @getshort(../spreadsheet_getformat_method.md)      |
@@ -48,4 +50,6 @@ description: You can have a Methods overview of the DHTMLX JavaScript Spreadshee
 | [](../spreadsheet_showrows_method.md)       | @getshort(../spreadsheet_showrows_method.md)       |
 | [](../spreadsheet_startedit_method.md)      | @getshort(../spreadsheet_startedit_method.md)      |
 | [](../spreadsheet_undo_method.md)           | @getshort(../spreadsheet_undo_method.md)           |
+| [](../spreadsheet_unfreezecols_method.md)   | @getshort(../spreadsheet_unfreezecols_method.md)   |
+| [](../spreadsheet_unfreezerows_method.md)   | @getshort(../spreadsheet_unfreezerows_method.md)   |
 | [](../spreadsheet_unlock_method.md)         | @getshort(../spreadsheet_unlock_method.md)         |

docs/api/overview/properties_overview.md

@@ -14,12 +14,11 @@ description: You can have a Properties overview of the DHTMLX JavaScript Spreads
 | [](../spreadsheet_exportmodulepath_config.md) | @getshort(../spreadsheet_exportmodulepath_config.md) |
 | [](../spreadsheet_formats_config.md)          | @getshort(../spreadsheet_formats_config.md)          |
 | [](../spreadsheet_importmodulepath_config.md) | @getshort(../spreadsheet_importmodulepath_config.md) |
-| [](../spreadsheet_leftsplit_config.md)        | @getshort(../spreadsheet_leftsplit_config.md)        |
 | [](../spreadsheet_localization_config.md)     | @getshort(../spreadsheet_localization_config.md)     |
 | [](../spreadsheet_menu_config.md)             | @getshort(../spreadsheet_menu_config.md)             |
 | [](../spreadsheet_multisheets_config.md)      | @getshort(../spreadsheet_multisheets_config.md)      |
 | [](../spreadsheet_readonly_config.md)         | @getshort(../spreadsheet_readonly_config.md)         |
 | [](../spreadsheet_rowscount_config.md)        | @getshort(../spreadsheet_rowscount_config.md)        |
 | [](../spreadsheet_timeformat_config.md)       | @getshort(../spreadsheet_timeformat_config.md)       |
 | [](../spreadsheet_toolbarblocks_config.md)    | @getshort(../spreadsheet_toolbarblocks_config.md)    |
-| [](../spreadsheet_topsplit_config.md)         | @getshort(../spreadsheet_topsplit_config.md)         |
+

docs/api/spreadsheet_afterdataloaded_event.md

@@ -0,0 +1,40 @@
+---
+sidebar_label: afterDataLoaded
+title: afterDataLoaded event
+description: You can learn about the afterDataLoaded event in the documentation of the DHTMLX JavaScript Spreadsheet library. Browse developer guides and API reference, try out code examples and live demos, and download a free 30-day evaluation version of DHTMLX Spreadsheet.
+---
+
+# afterDataLoaded
+
+### Description
+
+@short: Fires after data loading is complete
+
+### Usage
+
+~~~jsx
+afterColumnAdd: (cell: string) => void;
+~~~
+
+### Example
+
+~~~jsx 
+const spreadsheet = new dhx.Spreadsheet("spreadsheet_container", {});
+spreadsheet.parse(data);
+
+// subscribe to the "afterDataLoaded" event
+spreadsheet.events.on("afterDataLoaded", () => {
+    dhx.message({
+        text: "Data is successfully loaded into Spreadsheet!",
+        css: "dhx_message--success",
+        expire: 5000
+    });
+});
+~~~
+
+**Change log:** Added in v5.2
+
+**Related article:** [Event handling](handling_events.md)
+
+**Related sample:** [Spreadsheet. Data loaded event](https://snippet.dhtmlx.com/vxr7amz6)
+

docs/api/spreadsheet_freezecols_method.md

@@ -0,0 +1,37 @@
+---
+sidebar_label: freezeCols() 
+title: freezeCols method
+description: You can learn about the freezeCols method in the documentation of the DHTMLX JavaScript Spreadsheet library. Browse developer guides and API reference, try out code examples and live demos, and download a free 30-day evaluation version of DHTMLX Spreadsheet.
+---
+
+# freezeCols()
+
+### Description
+
+@short: Fixes ("freezes") columns
+
+### Usage
+
+~~~jsx
+freezeCols(cell?: string): void;
+~~~
+
+### Parameters
+
+- `cell` - (optional) the id of the cell used to define the id of a column. If the cell id isn't passed, the currently selected cell will be used 
+
+### Example
+
+~~~jsx 
+spreadsheet.freezeCols("B2"); // the columns up to the "B" column will be fixed
+spreadsheet.freezeCols("sheet2!B2"); // the columns up to the "B" column in "sheet2" will be fixed
+~~~
+
+**Related articles:** [Work with Spreadsheet](working_with_ssheet.md/#freezingunfreezing-rows-and-columns)
+
+**Related API:** [`unfreezeCols()`](api/spreadsheet_unfreezecols_method.md/)
+
+**Related sample:** [Spreadsheet. Freezing columns and rows via API](https://snippet.dhtmlx.com/a12xd1mn)
+
+**Change log:** 
+Added in v5.2

docs/api/spreadsheet_freezerows_method.md

@@ -0,0 +1,37 @@
+---
+sidebar_label: freezeRows() 
+title: freezeRows method
+description: You can learn about the freezeRows method in the documentation of the DHTMLX JavaScript Spreadsheet library. Browse developer guides and API reference, try out code examples and live demos, and download a free 30-day evaluation version of DHTMLX Spreadsheet.
+---
+
+# freezeRows()
+
+### Description
+
+@short: Fixes ("freezes") rows
+
+### Usage
+
+~~~jsx
+freezeRows(cell?: string): void;
+~~~
+
+### Parameters
+
+- `cell` - (optional) the id of the cell used to define the id of a row. If the cell id isn't passed, the currently selected cell will be used 
+
+### Example
+
+~~~jsx 
+spreadsheet.freezeRows("B2"); // the rows up to the second row will be fixed
+spreadsheet.freezeRows("sheet2!B2"); // the rows up to the second row in "sheet2" will be fixed
+~~~
+
+**Related articles:** [Work with Spreadsheet](working_with_ssheet.md/#freezingunfreezing-rows-and-columns)
+
+**Related API:** [`unfreezeRows()`](api/spreadsheet_unfreezerows_method.md/)
+
+**Related sample:** [Spreadsheet. Freezing columns and rows via API](https://snippet.dhtmlx.com/a12xd1mn)
+
+**Change log:** 
+Added in v5.2

docs/api/spreadsheet_leftsplit_config.md

@@ -77,7 +77,11 @@ parse({
                     to: { column: index, row: index }
                 },
                 // more objects
-            ]
+            ],
+            freeze?: {
+               col?: number,
+               row?: number,
+            }
         },
         // more sheet objects
     ]      
@@ -132,6 +136,10 @@ If you need to create a data set *for several sheets* at once, specify data as a
         - `to` - an object which defines the position of the last cell from a range:
             - `column` - the index of the column
             - `row` - the index of the row
+    - `freeze` - (optional) an object that sets and adjusts fixed columns/rows for particular sheets. It may contain the following properties:
+        - `col` - (optional) specifies the number of fixed columns, for example, 2 
+        - `row` - (optional) specifies the number of fixed rows, for example, 2 
+        The default value of the parameter is `freeze: {col: 0, row: 0}`
 
 :::info
 In case the [`multisheets`](api/spreadsheet_multisheets_config.md) configuration option is set to *false*, only one sheet will be created.