toolkit/modules/WindowDraggingUtils.jsm@6474c204b198 (annotated)
toolkit/modules/WindowDraggingUtils.jsm
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | #ifdef XP_WIN |
| michael@0 | 6 | #define USE_HITTEST |
| michael@0 | 7 | #elifdef MOZ_WIDGET_COCOA |
| michael@0 | 8 | #define USE_HITTEST |
| michael@0 | 9 | #endif |
| michael@0 | 10 | |
| michael@0 | 11 | this.EXPORTED_SYMBOLS = [ "WindowDraggingElement" ]; |
| michael@0 | 12 | |
| michael@0 | 13 | this.WindowDraggingElement = function WindowDraggingElement(elem) { |
| michael@0 | 14 | this._elem = elem; |
| michael@0 | 15 | this._window = elem.ownerDocument.defaultView; |
| michael@0 | 16 | #ifdef USE_HITTEST |
| michael@0 | 17 | if (!this.isPanel()) |
| michael@0 | 18 | this._elem.addEventListener("MozMouseHittest", this, false); |
| michael@0 | 19 | else |
| michael@0 | 20 | #endif |
| michael@0 | 21 | this._elem.addEventListener("mousedown", this, false); |
| michael@0 | 22 | }; |
| michael@0 | 23 | |
| michael@0 | 24 | WindowDraggingElement.prototype = { |
| michael@0 | 25 | mouseDownCheck: function(e) { return true; }, |
| michael@0 | 26 | dragTags: ["box", "hbox", "vbox", "spacer", "label", "statusbarpanel", "stack", |
| michael@0 | 27 | "toolbaritem", "toolbarseparator", "toolbarspring", "toolbarspacer", |
| michael@0 | 28 | "radiogroup", "deck", "scrollbox", "arrowscrollbox", "tabs"], |
| michael@0 | 29 | shouldDrag: function(aEvent) { |
| michael@0 | 30 | if (aEvent.button != 0 || |
| michael@0 | 31 | this._window.fullScreen || |
| michael@0 | 32 | !this.mouseDownCheck.call(this._elem, aEvent) || |
| michael@0 | 33 | aEvent.defaultPrevented) |
| michael@0 | 34 | return false; |
| michael@0 | 35 | |
| michael@0 | 36 | let target = aEvent.originalTarget, parent = aEvent.originalTarget; |
| michael@0 | 37 | |
| michael@0 | 38 | // The target may be inside an embedded iframe or browser. (bug 615152) |
| michael@0 | 39 | if (target.ownerDocument.defaultView != this._window) |
| michael@0 | 40 | return false; |
| michael@0 | 41 | |
| michael@0 | 42 | while (parent != this._elem) { |
| michael@0 | 43 | let mousethrough = parent.getAttribute("mousethrough"); |
| michael@0 | 44 | if (mousethrough == "always") |
| michael@0 | 45 | target = parent.parentNode; |
| michael@0 | 46 | else if (mousethrough == "never") |
| michael@0 | 47 | break; |
| michael@0 | 48 | parent = parent.parentNode; |
| michael@0 | 49 | } |
| michael@0 | 50 | while (target != this._elem) { |
| michael@0 | 51 | if (this.dragTags.indexOf(target.localName) == -1) |
| michael@0 | 52 | return false; |
| michael@0 | 53 | target = target.parentNode; |
| michael@0 | 54 | } |
| michael@0 | 55 | return true; |
| michael@0 | 56 | }, |
| michael@0 | 57 | isPanel : function() { |
| michael@0 | 58 | return this._elem instanceof Components.interfaces.nsIDOMXULElement && |
| michael@0 | 59 | this._elem.localName == "panel"; |
| michael@0 | 60 | }, |
| michael@0 | 61 | handleEvent: function(aEvent) { |
| michael@0 | 62 | let isPanel = this.isPanel(); |
| michael@0 | 63 | #ifdef USE_HITTEST |
| michael@0 | 64 | if (!isPanel) { |
| michael@0 | 65 | if (this.shouldDrag(aEvent)) |
| michael@0 | 66 | aEvent.preventDefault(); |
| michael@0 | 67 | return; |
| michael@0 | 68 | } |
| michael@0 | 69 | #endif |
| michael@0 | 70 | |
| michael@0 | 71 | switch (aEvent.type) { |
| michael@0 | 72 | case "mousedown": |
| michael@0 | 73 | if (!this.shouldDrag(aEvent)) |
| michael@0 | 74 | return; |
| michael@0 | 75 | |
| michael@0 | 76 | #ifdef MOZ_WIDGET_GTK |
| michael@0 | 77 | // On GTK, there is a toolkit-level function which handles |
| michael@0 | 78 | // window dragging, which must be used. |
| michael@0 | 79 | this._window.beginWindowMove(aEvent, isPanel ? this._elem : null); |
| michael@0 | 80 | #else |
| michael@0 | 81 | if (isPanel) { |
| michael@0 | 82 | let screenRect = this._elem.getOuterScreenRect(); |
| michael@0 | 83 | this._deltaX = aEvent.screenX - screenRect.left; |
| michael@0 | 84 | this._deltaY = aEvent.screenY - screenRect.top; |
| michael@0 | 85 | } |
| michael@0 | 86 | else { |
| michael@0 | 87 | this._deltaX = aEvent.screenX - this._window.screenX; |
| michael@0 | 88 | this._deltaY = aEvent.screenY - this._window.screenY; |
| michael@0 | 89 | } |
| michael@0 | 90 | this._draggingWindow = true; |
| michael@0 | 91 | this._window.addEventListener("mousemove", this, false); |
| michael@0 | 92 | this._window.addEventListener("mouseup", this, false); |
| michael@0 | 93 | #endif |
| michael@0 | 94 | break; |
| michael@0 | 95 | case "mousemove": |
| michael@0 | 96 | if (this._draggingWindow) { |
| michael@0 | 97 | let toDrag = this.isPanel() ? this._elem : this._window; |
| michael@0 | 98 | toDrag.moveTo(aEvent.screenX - this._deltaX, aEvent.screenY - this._deltaY); |
| michael@0 | 99 | } |
| michael@0 | 100 | break; |
| michael@0 | 101 | case "mouseup": |
| michael@0 | 102 | if (this._draggingWindow) { |
| michael@0 | 103 | this._draggingWindow = false; |
| michael@0 | 104 | this._window.removeEventListener("mousemove", this, false); |
| michael@0 | 105 | this._window.removeEventListener("mouseup", this, false); |
| michael@0 | 106 | } |
| michael@0 | 107 | break; |
| michael@0 | 108 | } |
| michael@0 | 109 | } |
| michael@0 | 110 | } |
