Merge branch 'rewrite-vapi'

1 files changed, 212 insertions, 0 deletions

diff --git a/js/vapi-contextmenu.js b/js/vapi-contextmenu.js
new file mode 100644
index 0000000..b0f8694
--- /dev/null
+++ b/js/vapi-contextmenu.js
@@ -0,0 +1,212 @@
+/*******************************************************************************
+
+    ηMatrix - a browser extension to black/white list requests.
+    Copyright (C) 2014-2019 The uMatrix/uBlock Origin authors
+    Copyright (C) 2019 Alessio Vanni
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see {http://www.gnu.org/licenses/}.
+
+    Home: https://gitlab.com/vannilla/ematrix
+    uMatrix Home: https://github.com/gorhill/uMatrix
+*/
+
+'use strict';
+
+/******************************************************************************/
+
+(function () {
+    vAPI.contextMenu = {
+	contextMap: {
+            frame: 'inFrame',
+            link: 'onLink',
+            image: 'onImage',
+            audio: 'onAudio',
+            video: 'onVideo',
+            editable: 'onEditableArea'
+	}
+    };
+
+    vAPI.contextMenu.displayMenuItem = function ({target}) {
+	let doc = target.ownerDocument;
+	let gContextMenu = doc.defaultView.gContextMenu;
+	if (!gContextMenu.browser) {
+            return;
+	}
+
+	let menuitem = doc.getElementById(vAPI.contextMenu.menuItemId);
+	let currentURI = gContextMenu.browser.currentURI;
+
+	// https://github.com/chrisaljoudi/uBlock/issues/105
+	// TODO: Should the element picker works on any kind of pages?
+	if (!currentURI.schemeIs('http') && !currentURI.schemeIs('https')) {
+            menuitem.setAttribute('hidden', true);
+            return;
+	}
+
+	let ctx = vAPI.contextMenu.contexts;
+
+	if (!ctx) {
+            menuitem.setAttribute('hidden', false);
+            return;
+	}
+
+	let ctxMap = vAPI.contextMenu.contextMap;
+
+	for (let context of ctx) {
+            if (context === 'page'
+		&& !gContextMenu.onLink
+		&& !gContextMenu.onImage
+		&& !gContextMenu.onEditableArea
+		&& !gContextMenu.inFrame
+		&& !gContextMenu.onVideo
+		&& !gContextMenu.onAudio) {
+		menuitem.setAttribute('hidden', false);
+		return;
+            }
+
+            if (ctxMap.hasOwnProperty(context)
+		&& gContextMenu[ctxMap[context]]) {
+		menuitem.setAttribute('hidden', false);
+		return;
+            }
+	}
+
+	menuitem.setAttribute('hidden', true);
+    };
+
+    vAPI.contextMenu.register = (function () {
+	let register = function (doc) {
+            if (!this.menuItemId) {
+		return;
+            }
+
+            // Already installed?
+            if (doc.getElementById(this.menuItemId) !== null) {
+		return;
+            }
+
+            let contextMenu = doc.getElementById('contentAreaContextMenu');
+	    
+            let menuitem = doc.createElement('menuitem');
+            menuitem.setAttribute('id', this.menuItemId);
+            menuitem.setAttribute('label', this.menuLabel);
+            menuitem.setAttribute('image', vAPI.getURL('img/browsericons/icon19-19.png'));
+            menuitem.setAttribute('class', 'menuitem-iconic');
+            menuitem.addEventListener('command', this.onCommand);
+	    
+            contextMenu.addEventListener('popupshowing', this.displayMenuItem);
+            contextMenu.insertBefore(menuitem, doc.getElementById('inspect-separator'));
+	};
+
+	let registerSafely = function (doc, tryCount) {
+	    // https://github.com/gorhill/uBlock/issues/906
+	    // Be sure document.readyState is 'complete': it could happen
+	    // at launch time that we are called by
+	    // vAPI.contextMenu.create() directly before the environment
+	    // is properly initialized.
+            if (doc.readyState === 'complete') {
+		register.call(this, doc);
+		return;
+            }
+	    
+            if (typeof tryCount !== 'number') {
+		tryCount = 0;
+            }
+	    
+            tryCount += 1;
+            if (tryCount < 8) {
+		vAPI.setTimeout(registerSafely.bind(this, doc, tryCount), 200);
+            }
+	};
+
+	return registerSafely;
+    })();
+
+    vAPI.contextMenu.unregister = function (doc) {
+	if (!this.menuItemId) {
+            return;
+	}
+
+	let menuitem = doc.getElementById(this.menuItemId);
+	if (menuitem === null) {
+            return;
+	}
+	
+	let contextMenu = menuitem.parentNode;
+	menuitem.removeEventListener('command', this.onCommand);
+	contextMenu.removeEventListener('popupshowing', this.displayMenuItem);
+	contextMenu.removeChild(menuitem);
+    };
+
+    vAPI.contextMenu.create = function (details, callback) {
+	this.menuItemId = details.id;
+	this.menuLabel = details.title;
+	this.contexts = details.contexts;
+
+	if (Array.isArray(this.contexts) && this.contexts.length) {
+            this.contexts = this.contexts.indexOf('all') === -1
+		? this.contexts
+		: null;
+	} else {
+            // default in Chrome
+            this.contexts = ['page'];
+	}
+
+	this.onCommand = function () {
+            let gContextMenu = vAPI.browser.getOwnerWindow(this).gContextMenu;
+            let details = {
+		menuItemId: this.id
+            };
+
+            if (gContextMenu.inFrame) {
+		details.tagName = 'iframe';
+		// Probably won't work with e10s
+		// eMatrix: doesn't matter ;)
+		details.frameUrl = gContextMenu.focusedWindow.location.href;
+            } else if (gContextMenu.onImage) {
+		details.tagName = 'img';
+		details.srcUrl = gContextMenu.mediaURL;
+            } else if (gContextMenu.onAudio) {
+		details.tagName = 'audio';
+		details.srcUrl = gContextMenu.mediaURL;
+            } else if (gContextMenu.onVideo) {
+		details.tagName = 'video';
+		details.srcUrl = gContextMenu.mediaURL;
+            } else if (gContextMenu.onLink) {
+		details.tagName = 'a';
+		details.linkUrl = gContextMenu.linkURL;
+            }
+
+            callback(details, {
+		id: vAPI.tabs.manager.tabIdFromTarget(gContextMenu.browser),
+		url: gContextMenu.browser.currentURI.asciiSpec
+            });
+	};
+
+	for (let win of vAPI.window.getWindows()) {
+            this.register(win.document);
+	}
+    };
+
+    vAPI.contextMenu.remove = function () {
+	for (let win of vAPI.window.getWindows()) {
+            this.unregister(win.document);
+	}
+
+	this.menuItemId = null;
+	this.menuLabel = null;
+	this.contexts = null;
+	this.onCommand = null;
+    };
+})();