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Merge pull request #13824 from adobe/boopeshmahendran/ContextSubMenu
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Add api for adding context submenus
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@nethip
nethip authored Dec 13, 2017
2 parents 05b3247 + 5616075 commit ea94c8b
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Showing 2 changed files with 418 additions and 21 deletions.
247 changes: 226 additions & 21 deletions src/command/Menus.js
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Original file line number Diff line number Diff line change
Expand Up @@ -124,6 +124,7 @@ define(function (require, exports, module) {
* Other constants
*/
var DIVIDER = "---";
var SUBMENU = "SUBMENU";

/**
* Error Codes from Brackets Shell
Expand Down Expand Up @@ -310,7 +311,7 @@ define(function (require, exports, module) {
this.isDivider = (command === DIVIDER);
this.isNative = false;

if (!this.isDivider) {
if (!this.isDivider && command !== SUBMENU) {
// Bind event handlers
this._enabledChanged = this._enabledChanged.bind(this);
this._checkedChanged = this._checkedChanged.bind(this);
Expand Down Expand Up @@ -612,6 +613,11 @@ define(function (require, exports, module) {
$menuItem.on("click", function () {
menuItem._command.execute();
});

var self = this;
$menuItem.on("mouseenter", function () {
self.closeSubMenu();
});
}

// Insert menu item
Expand Down Expand Up @@ -740,6 +746,160 @@ define(function (require, exports, module) {
// NOT IMPLEMENTED
// };

/**
*
* Creates a new submenu and a menuItem and adds the menuItem of the submenu
* to the menu and returns the submenu.
*
* A submenu will have the same structure of a menu with a additional field
* parentMenuItem which has the reference of the submenu's parent menuItem.
* A submenu will raise the following events:
* - beforeSubMenuOpen
* - beforeSubMenuClose
*
* Note, This function will create only a context submenu.
*
* TODO: Make this function work for Menus
*
*
* @param {!string} name displayed in menu item of the submenu
* @param {!string} id
* @param {?string} position - constant defining the position of new MenuItem of the submenu relative to
* other MenuItems. Values:
* - With no relativeID, use Menus.FIRST or LAST (default is LAST)
* - Relative to a command id, use BEFORE or AFTER (required)
* - Relative to a MenuSection, use FIRST_IN_SECTION or LAST_IN_SECTION (required)
* @param {?string} relativeID - command id OR one of the MenuSection.* constants. Required
* for all position constants except FIRST and LAST.
*
* @return {Menu} the newly created submenu
*/
Menu.prototype.addSubMenu = function (name, id, position, relativeID) {

if (!name || !id) {
console.error("addSubMenu(): missing required parameters: name and id");
return null;
}

// Guard against duplicate context menu ids
if (contextMenuMap[id]) {
console.log("Context menu added with id of existing Context Menu: " + id);
return null;
}

var menu = new ContextMenu(id);
contextMenuMap[id] = menu;

var menuItemID = this.id + "-" + id;

if (menuItemMap[menuItemID]) {
console.log("MenuItem added with same id of existing MenuItem: " + id);
return null;
}

// create MenuItem
var menuItem = new MenuItem(menuItemID, SUBMENU);
menuItemMap[menuItemID] = menuItem;

menu.parentMenuItem = menuItem;

// create MenuItem DOM
if (_isHTMLMenu(this.id)) {
// Create the HTML MenuItem
var $menuItem = $("<li><a href='#' id='" + menuItemID + "'>" +
"<span class='menu-name'>" + name + "</span>" +
"<span style='float: right'>&rtrif;</span>" +
"</a></li>");

var self = this;
$menuItem.on("mouseenter", function(e) {
if (self.openSubMenu && self.openSubMenu.id === menu.id) {
return;
}
self.closeSubMenu();
self.openSubMenu = menu;
menu.open();
});

// Insert menu item
var $relativeElement = this._getRelativeMenuItem(relativeID, position);
_insertInList($("li#" + StringUtils.jQueryIdEscape(this.id) + " > ul.dropdown-menu"),
$menuItem, position, $relativeElement);
} else {
// TODO: add submenus for native menus
}
return menu;
};


/**
* Removes the specified submenu from this Menu.
*
* Note, this function will only remove context submenus
*
* TODO: Make this function work for Menus
*
* @param {!string} subMenuID - the menu id of the submenu to remove.
*/
Menu.prototype.removeSubMenu = function (subMenuID) {
var subMenu,
parentMenuItem,
commandID = "";

if (!subMenuID) {
console.error("removeSubMenu(): missing required parameters: subMenuID");
return;
}

subMenu = getContextMenu(subMenuID);

if (!subMenu || !subMenu.parentMenuItem) {
console.error("removeSubMenu(): parameter subMenuID: %s is not a valid submenu id", subMenuID);
return;
}

parentMenuItem = subMenu.parentMenuItem;


if (!menuItemMap[parentMenuItem.id]) {
console.error("removeSubMenu(): parent menuItem not found in menuItemMap: %s", parentMenuItem.id);
return;
}

// Remove all of the menu items in the submenu
_.forEach(menuItemMap, function (value, key) {
if (_.startsWith(key, subMenuID)) {
if (value.isDivider) {
subMenu.removeMenuDivider(key);
} else {
commandID = value.getCommand();
subMenu.removeMenuItem(commandID);
}
}
});

if (_isHTMLMenu(this.id)) {
$(_getHTMLMenuItem(parentMenuItem.id)).parent().remove(); // remove the menu item
$(_getHTMLMenu(subMenuID)).remove(); // remove the menu
} else {
// TODO: remove submenus for native menus
}


delete menuItemMap[parentMenuItem.id];
delete contextMenuMap[subMenuID];
};

/**
* Closes the submenu if the menu has a submenu open.
*/
Menu.prototype.closeSubMenu = function() {
if (this.openSubMenu) {
this.openSubMenu.close();
this.openSubMenu = null;
}
};
/**
* Gets the Command associated with a MenuItem
* @return {Command}
Expand Down Expand Up @@ -1038,17 +1198,24 @@ define(function (require, exports, module) {

/**
* Displays the ContextMenu at the specified location and dispatches the
* "beforeContextMenuOpen" event.The menu location may be adjusted to prevent
* clipping by the browser window. All other menus and ContextMenus will be closed
* bofore a new menu is shown.
* "beforeContextMenuOpen" event or "beforeSubMenuOpen" event (for submenus).
* The menu location may be adjusted to prevent clipping by the browser window.
* All other menus and ContextMenus will be closed before a new menu
* will be closed before a new menu is shown (if the new menu is not
* a submenu).
*
* In case of submenus, the parentMenu of the submenu will not be closed when the
* sub menu is open.
*
* @param {MouseEvent | {pageX:number, pageY:number}} mouseOrLocation - pass a MouseEvent
* to display the menu near the mouse or pass in an object with page x/y coordinates
* for a specific location.
* for a specific location.This paramter is not used for submenus. Submenus are always
* displayed at a position relative to the parent menu.
*/
ContextMenu.prototype.open = function (mouseOrLocation) {

if (!mouseOrLocation || !mouseOrLocation.hasOwnProperty("pageX") || !mouseOrLocation.hasOwnProperty("pageY")) {
if (!this.parentMenuItem &&
(!mouseOrLocation || !mouseOrLocation.hasOwnProperty("pageX") || !mouseOrLocation.hasOwnProperty("pageY"))) {
console.error("ContextMenu open(): missing required parameter");
return;
}
Expand All @@ -1057,37 +1224,70 @@ define(function (require, exports, module) {
escapedId = StringUtils.jQueryIdEscape(this.id),
$menuAnchor = $("#" + escapedId),
$menuWindow = $("#" + escapedId + " > ul"),
posTop = mouseOrLocation.pageY,
posLeft = mouseOrLocation.pageX;
posTop,
posLeft;

// only show context menu if it has menu items
if ($menuWindow.children().length <= 0) {
return;
}

this.trigger("beforeContextMenuOpen");

// close all other dropdowns
closeAll();

// adjust positioning so menu is not clipped off bottom or right
var elementRect = {
if (this.parentMenuItem) { // If context menu is a submenu

this.trigger("beforeSubMenuOpen");

var $parentMenuItem = $(_getHTMLMenuItem(this.parentMenuItem.id));

posTop = $parentMenuItem.offset().top;
posLeft = $parentMenuItem.offset().left + $parentMenuItem.outerWidth();

var elementRect = {
top: posTop,
left: posLeft,
height: $menuWindow.height() + 25,
width: $menuWindow.width()
},
clip = ViewUtils.getElementClipSize($window, elementRect);

if (clip.bottom > 0) {
posTop = Math.max(0, posTop - clip.bottom);
}
posTop -= 30; // shift top for hidden parent element
posLeft += 5;
if (clip.bottom > 0) {
posTop = Math.max(0, posTop + $parentMenuItem.height() - $menuWindow.height());
}

posTop -= 30; // shift top for hidden parent element
posLeft += 3;

if (clip.right > 0) {
posLeft = Math.max(0, posLeft - clip.right);
if (clip.right > 0) {
posLeft = Math.max(0, posLeft - 2 * $parentMenuItem.outerWidth());
}
} else {
this.trigger("beforeContextMenuOpen");

// close all other dropdowns
closeAll();

posTop = mouseOrLocation.pageY;
posLeft = mouseOrLocation.pageX;

var elementRect = {
top: posTop,
left: posLeft,
height: $menuWindow.height() + 25,
width: $menuWindow.width()
},
clip = ViewUtils.getElementClipSize($window, elementRect);

if (clip.bottom > 0) {
posTop = Math.max(0, posTop - clip.bottom);
}
posTop -= 30; // shift top for hidden parent element
posLeft += 5;


if (clip.right > 0) {
posLeft = Math.max(0, posLeft - clip.right);
}
}

// open the context menu at final location
Expand All @@ -1100,7 +1300,12 @@ define(function (require, exports, module) {
* Closes the context menu.
*/
ContextMenu.prototype.close = function () {
this.trigger("beforeContextMenuClose");
if (this.parentMenuItem) {
this.trigger("beforeSubMenuClose");
} else {
this.trigger("beforeContextMenuClose");
}
this.closeSubMenu();
$("#" + StringUtils.jQueryIdEscape(this.id)).removeClass("open");
};

Expand Down
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