Source code

Revision control

Other Tools

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386
<?xml version="1.0"?>
<!-- This Source Code Form is subject to the terms of the Mozilla Public
   - License, v. 2.0. If a copy of the MPL was not distributed with this
   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->

<bindings id="popupBindings"
   xmlns="http://www.mozilla.org/xbl"
   xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
   xmlns:xbl="http://www.mozilla.org/xbl">

  <binding id="popup">
    <content>
      <xul:arrowscrollbox class="popup-internal-box" flex="1" orient="vertical"
                          smoothscroll="false">
        <children/>
      </xul:arrowscrollbox>
    </content>

    <implementation>
      <field name="scrollBox" readonly="true">
        document.getAnonymousElementByAttribute(this, "class", "popup-internal-box");
      </field>

      <field name="AUTOSCROLL_INTERVAL">25</field>
      <field name="NOT_DRAGGING">0</field>
      <field name="DRAG_OVER_BUTTON">-1</field>
      <field name="DRAG_OVER_POPUP">1</field>

      <field name="_draggingState">this.NOT_DRAGGING</field>
      <field name="_scrollTimer">0</field>

      <method name="_enableDragScrolling">
        <!-- when overItem is true, drag started over menuitem; when false, drag
             started while the popup was opening.
          -->
        <parameter name="overItem"/>
        <body>
        <![CDATA[
          if (!this._draggingState) {
            this.setCaptureAlways();
            this._draggingState = overItem ? this.DRAG_OVER_POPUP : this.DRAG_OVER_BUTTON;
          }
        ]]>
        </body>
      </method>

      <method name="_clearScrollTimer">
        <body>
        <![CDATA[
          if (this._scrollTimer) {
            this.ownerGlobal.clearInterval(this._scrollTimer);
            this._scrollTimer = 0;
          }
        ]]>
        </body>
      </method>

      <constructor><![CDATA[
        // Enable the drag-to-scroll events only in menulist popups.
        if (!this.parentNode || this.parentNode.localName != "menulist") {
          return;
        }

        // XBL bindings might be constructed more than once.
        if (this.eventListenersAdded) {
          return;
        }
        this.eventListenersAdded = true;

        this.addEventListener("popupshown", () => {
          // Enable drag scrolling even when the mouse wasn't used. The
          // mousemove handler will remove it if the mouse isn't down.
          this._enableDragScrolling(false);
        });

        this.addEventListener("popuphidden", () => {
          this._draggingState = this.NOT_DRAGGING;
          this._clearScrollTimer();
          this.releaseCapture();
        });

        this.addEventListener("mousedown", event => {
          if (event.button != 0) {
            return;
          }

          if (this.state == "open" &&
            (event.target.localName == "menuitem" ||
              event.target.localName == "menu" ||
              event.target.localName == "menucaption")) {
            this._enableDragScrolling(true);
          }
        });

        this.addEventListener("mouseup", event => {
          if (event.button != 0) {
            return;
          }

          this._draggingState = this.NOT_DRAGGING;
          this._clearScrollTimer();
        });

        this.addEventListener("mousemove", event => {
          if (!this._draggingState) {
            return;
          }

          this._clearScrollTimer();

          // If the user released the mouse before the popup opens, we will
          // still be capturing, so check that the button is still pressed. If
          // not, release the capture and do nothing else. This also handles if
          // the dropdown was opened via the keyboard.
          if (!(event.buttons & 1)) {
            this._draggingState = this.NOT_DRAGGING;
            this.releaseCapture();
            return;
          }

          // If dragging outside the top or bottom edge of the popup, but within
          // the popup area horizontally, scroll the list in that direction. The
          // _draggingState flag is used to ensure that scrolling does not start
          // until the mouse has moved over the popup first, preventing
          // scrolling while over the dropdown button.
          let popupRect = this.getOuterScreenRect();
          if (event.screenX >= popupRect.left &&
              event.screenX <= popupRect.right) {
            if (this._draggingState == this.DRAG_OVER_BUTTON) {
              if (event.screenY > popupRect.top &&
                  event.screenY < popupRect.bottom) {
                this._draggingState = this.DRAG_OVER_POPUP;
              }
            }

            if (this._draggingState == this.DRAG_OVER_POPUP &&
                (event.screenY <= popupRect.top ||
                 event.screenY >= popupRect.bottom)) {
              let scrollAmount = event.screenY <= popupRect.top ? -1 : 1;
              this.scrollBox.scrollByIndex(scrollAmount, true);

              let win = this.ownerGlobal;
              this._scrollTimer = win.setInterval(() => {
                this.scrollBox.scrollByIndex(scrollAmount, true);
              }, this.AUTOSCROLL_INTERVAL);
            }
          }
        });
      ]]></constructor>
    </implementation>

    <handlers>
      <handler event="popupshowing" phase="target">
        <![CDATA[
          var array = [];
          var width = 0;
          for (var menuitem = this.firstElementChild; menuitem; menuitem = menuitem.nextElementSibling) {
            if (menuitem.localName == "menuitem" && menuitem.hasAttribute("acceltext")) {
              var accel = menuitem.menuAccel;
              if (accel) {
                array.push(accel);
                let accelWidth = accel.getBoundingClientRect().width;
                if (accelWidth > width) {
                  width = accelWidth;
                }
              }
            }
          }
          for (var i = 0; i < array.length; i++)
            array[i].width = width;
        ]]>
      </handler>
    </handlers>
  </binding>

  <binding id="panel">
    <implementation>
      <field name="_prevFocus">0</field>
    </implementation>

    <handlers>
      <handler event="popupshowing"><![CDATA[
        // Capture the previous focus before has a chance to get set inside the panel
        try {
          this._prevFocus = Cu
                            .getWeakReference(document.commandDispatcher.focusedElement);
          if (this._prevFocus.get())
            return;
        } catch (ex) { }

        this._prevFocus = Cu.getWeakReference(document.activeElement);
      ]]></handler>
      <handler event="popupshown"><![CDATA[
        // Fire event for accessibility APIs
        var alertEvent = document.createEvent("Events");
        alertEvent.initEvent("AlertActive", true, true);
        this.dispatchEvent(alertEvent);
       ]]></handler>
      <handler event="popuphiding"><![CDATA[
        try {
          this._currentFocus = document.commandDispatcher.focusedElement;
        } catch (e) {
          this._currentFocus = document.activeElement;
        }
      ]]></handler>
      <handler event="popuphidden"><![CDATA[
        function doFocus() {
          // Focus was set on an element inside this panel,
          // so we need to move it back to where it was previously
          try {
            let fm = Cc["@mozilla.org/focus-manager;1"]
                       .getService(Ci.nsIFocusManager);
            fm.setFocus(prevFocus, fm.FLAG_NOSCROLL);
          } catch (e) {
            prevFocus.focus();
          }
        }
        var currentFocus = this._currentFocus;
        var prevFocus = this._prevFocus ? this._prevFocus.get() : null;
        this._currentFocus = null;
        this._prevFocus = null;

        // Avoid changing focus if focus changed while we hide the popup
        // (This can happen e.g. if the popup is hiding as a result of a
        // click/keypress that focused something)
        let nowFocus;
        try {
          nowFocus = document.commandDispatcher.focusedElement;
        } catch (e) {
          nowFocus = document.activeElement;
        }
        if (nowFocus && nowFocus != currentFocus)
          return;

        if (prevFocus && this.getAttribute("norestorefocus") != "true") {
          // Try to restore focus
          try {
            if (document.commandDispatcher.focusedWindow != window)
              return; // Focus has already been set to a window outside of this panel
          } catch (ex) {}

          if (!currentFocus) {
            doFocus();
            return;
          }
          while (currentFocus) {
            if (currentFocus == this) {
              doFocus();
              return;
            }
            currentFocus = currentFocus.parentNode;
          }
        }
      ]]></handler>
    </handlers>
  </binding>

  <binding id="arrowpanel" extends="chrome://global/content/bindings/popup.xml#panel">
    <content flip="both" side="top" position="bottomcenter topleft" consumeoutsideclicks="false">
      <xul:vbox anonid="container" class="panel-arrowcontainer" flex="1"
               xbl:inherits="side,panelopen">
        <xul:box anonid="arrowbox" class="panel-arrowbox">
          <xul:image anonid="arrow" class="panel-arrow" xbl:inherits="side"/>
        </xul:box>
        <xul:box class="panel-arrowcontent" xbl:inherits="side,align,dir,orient,pack" flex="1">
          <children/>
        </xul:box>
      </xul:vbox>
    </content>
    <implementation>
      <field name="_fadeTimer">null</field>
      <method name="adjustArrowPosition">
        <body>
        <![CDATA[
        var anchor = this.anchorNode;
        if (!anchor) {
          return;
        }

        var container = document.getAnonymousElementByAttribute(this, "anonid", "container");
        var arrowbox = document.getAnonymousElementByAttribute(this, "anonid", "arrowbox");

        var position = this.alignmentPosition;
        var offset = this.alignmentOffset;

        this.setAttribute("arrowposition", position);

        if (position.indexOf("start_") == 0 || position.indexOf("end_") == 0) {
          container.orient = "horizontal";
          arrowbox.orient = "vertical";
          if (position.indexOf("_after") > 0) {
            arrowbox.pack = "end";
          } else {
            arrowbox.pack = "start";
          }
          arrowbox.style.transform = "translate(0, " + -offset + "px)";

          // The assigned side stays the same regardless of direction.
          var isRTL = (window.getComputedStyle(this).direction == "rtl");

          if (position.indexOf("start_") == 0) {
            container.dir = "reverse";
            this.setAttribute("side", isRTL ? "left" : "right");
          } else {
            container.dir = "";
            this.setAttribute("side", isRTL ? "right" : "left");
          }
        } else if (position.indexOf("before_") == 0 || position.indexOf("after_") == 0) {
          container.orient = "";
          arrowbox.orient = "";
          if (position.indexOf("_end") > 0) {
            arrowbox.pack = "end";
          } else {
            arrowbox.pack = "start";
          }
          arrowbox.style.transform = "translate(" + -offset + "px, 0)";

          if (position.indexOf("before_") == 0) {
            container.dir = "reverse";
            this.setAttribute("side", "bottom");
          } else {
            container.dir = "";
            this.setAttribute("side", "top");
          }
        }
        ]]>
        </body>
      </method>
    </implementation>
    <handlers>
      <handler event="popupshowing" phase="target">
      <![CDATA[
        var arrow = document.getAnonymousElementByAttribute(this, "anonid", "arrow");
        arrow.hidden = this.anchorNode == null;
        document.getAnonymousElementByAttribute(this, "anonid", "arrowbox")
                .style.removeProperty("transform");

        if (this.getAttribute("animate") != "false") {
          this.setAttribute("animate", "open");
          // the animating attribute prevents user interaction during transition
          // it is removed when popupshown fires
          this.setAttribute("animating", "true");
        }

        // set fading
        var fade = this.getAttribute("fade");
        var fadeDelay = 0;
        if (fade == "fast") {
          fadeDelay = 1;
        } else if (fade == "slow") {
          fadeDelay = 4000;
        } else {
          return;
        }

        this._fadeTimer = setTimeout(() => this.hidePopup(true), fadeDelay, this);
      ]]>
      </handler>
      <handler event="popuphiding" phase="target">
        let animate = (this.getAttribute("animate") != "false");

        if (this._fadeTimer) {
          clearTimeout(this._fadeTimer);
          if (animate) {
            this.setAttribute("animate", "fade");
          }
        } else if (animate) {
          this.setAttribute("animate", "cancel");
        }
      </handler>
      <handler event="popupshown" phase="target">
        this.removeAttribute("animating");
        this.setAttribute("panelopen", "true");
      </handler>
      <handler event="popuphidden" phase="target">
        this.removeAttribute("panelopen");
        if (this.getAttribute("animate") != "false") {
          this.removeAttribute("animate");
        }
      </handler>
      <handler event="popuppositioned" phase="target">
        this.adjustArrowPosition();
      </handler>
    </handlers>
  </binding>
</bindings>