Extensions (#737)

- add the current document title in the toolbar
- allow user extensions to define optional parameters
- more events for renamedElement, beforeClear, afterClear, sourceChanged
- remove "message" event used for iframe integration not used anymore. can be readded through a new extension if necessary
- default precision down to 2 digits (and applied in rotation)

src/editor/MainMenu.js

@@ -1,4 +1,4 @@
-/* globals seConfirm, seAlert */
+/* globals seAlert */
 import SvgCanvas from '../svgcanvas/svgcanvas.js'
 import { convertUnit, isValidUnit } from '../common/units.js'
 import { isChrome } from '../common/browser.js'
@@ -21,26 +21,6 @@ class MainMenu {
     this.exportWindowCt = 0
   }
 
-  /**
-   * @fires module:svgcanvas.SvgCanvas#event:ext_onNewDocument
-   * @returns {void}
-   */
-  async clickClear () {
-    const [x, y] = this.editor.configObj.curConfig.dimensions
-    const ok = await seConfirm(this.editor.i18next.t('notification.QwantToClear'))
-    if (ok === 'Cancel') {
-      return
-    }
-    this.editor.leftPanel.clickSelect()
-    this.editor.svgCanvas.clear()
-    this.editor.svgCanvas.setResolution(x, y)
-    this.editor.updateCanvas(true)
-    this.editor.zoomImage()
-    this.editor.layersPanel.populateLayers()
-    this.editor.topPanel.updateContextPanel()
-    this.editor.svgCanvas.runExtensions('onNewDocument')
-  }
-
   /**
    *
    * @returns {void}