Title: [188484] trunk/Source/WebInspectorUI
Revision
188484
Author
[email protected]
Date
2015-08-14 13:07:15 -0700 (Fri, 14 Aug 2015)

Log Message

Web Inspector: Add visual editors for CSS properties
https://bugs.webkit.org/show_bug.cgi?id=147576

Added parent class for property editors in the Visual style
details panel in the CSS sidebar.

Reviewed by Timothy Hatcher.

* UserInterface/Views/VisualStylePropertyCombiner.js: Added.
(WebInspector.VisualStylePropertyCombiner):
(WebInspector.VisualStylePropertyCombiner.prototype.get style):
(WebInspector.VisualStylePropertyCombiner.prototype.get synthesizedValue):
(WebInspector.VisualStylePropertyCombiner.prototype.modifyPropertyText):
(WebInspector.VisualStylePropertyCombiner.prototype.update):
(WebInspector.VisualStylePropertyCombiner.prototype.updateValuesFromText.updateCompatibleEditor):
(WebInspector.VisualStylePropertyCombiner.prototype.updateValuesFromText):
(WebInspector.VisualStylePropertyCombiner.prototype.propertyMissing):
(WebInspector.VisualStylePropertyCombiner.prototype.resetEditorValues):
(WebInspector.VisualStylePropertyCombiner.prototype._markEditors):
(WebInspector.VisualStylePropertyCombiner.prototype._handlePropertyEditorValueChanged):

* UserInterface/Views/VisualStylePropertyEditor.css: Added.
(.visual-style-property-container):
(.visual-style-property-container > .visual-style-property-title):
(.visual-style-property-container > .visual-style-property-title > .property-reference-info):
(.visual-style-property-container.disabled > .visual-style-property-title > :not(.property-reference-info)):
(.visual-style-property-container > .visual-style-property-value-container):
(.visual-style-property-container.disabled > .visual-style-property-value-container):
(.visual-style-property-container > .visual-style-property-value-container select):
(.visual-style-property-container > .visual-style-property-value-container input):
(.visual-style-property-container.disabled > .visual-style-property-value-container input):
(.visual-style-property-container.layout-reversed > .visual-style-property-title):
(.visual-style-property-container > .visual-style-property-value-container > .visual-style-special-property-placeholder):
(.visual-style-property-info-popover):
(.visual-style-property-info-popover > h3):

* UserInterface/Views/VisualStylePropertyEditor.js: Added.
(WebInspector.VisualStylePropertyEditor.canonicalizeValues):
(WebInspector.VisualStylePropertyEditor):
(WebInspector.VisualStylePropertyEditor.prototype.get element):
(WebInspector.VisualStylePropertyEditor.prototype.get style):
(WebInspector.VisualStylePropertyEditor.prototype.get value):
(WebInspector.VisualStylePropertyEditor.prototype.set value):
(WebInspector.VisualStylePropertyEditor.prototype.get units):
(WebInspector.VisualStylePropertyEditor.prototype.set units):
(WebInspector.VisualStylePropertyEditor.prototype.get placeholder):
(WebInspector.VisualStylePropertyEditor.prototype.set placeholder):
(WebInspector.VisualStylePropertyEditor.prototype.get synthesizedValue):
(WebInspector.VisualStylePropertyEditor.prototype.set suppressStyleTextUpdate):
(WebInspector.VisualStylePropertyEditor.prototype.set masterProperty):
(WebInspector.VisualStylePropertyEditor.prototype.get masterProperty):
(WebInspector.VisualStylePropertyEditor.prototype.set optionalProperty):
(WebInspector.VisualStylePropertyEditor.prototype.get optionalProperty):
(WebInspector.VisualStylePropertyEditor.prototype.set colorProperty):
(WebInspector.VisualStylePropertyEditor.prototype.get colorProperty):
(WebInspector.VisualStylePropertyEditor.prototype.get propertyReferenceName):
(WebInspector.VisualStylePropertyEditor.prototype.set propertyReferenceName):
(WebInspector.VisualStylePropertyEditor.prototype.set disabled):
(WebInspector.VisualStylePropertyEditor.prototype.get disabled):
(WebInspector.VisualStylePropertyEditor.prototype.update):
(WebInspector.VisualStylePropertyEditor.prototype.updateEditorValues):
(WebInspector.VisualStylePropertyEditor.prototype.resetEditorValues):
(WebInspector.VisualStylePropertyEditor.prototype.modifyPropertyText):
(WebInspector.VisualStylePropertyEditor.prototype.getValuesFromText):
(WebInspector.VisualStylePropertyEditor.prototype.propertyMissing):
(WebInspector.VisualStylePropertyEditor.prototype.valueIsCompatible):
(WebInspector.VisualStylePropertyEditor.prototype.valueIsSupportedKeyword):
(WebInspector.VisualStylePropertyEditor.prototype.valueIsSupportedUnit):
(WebInspector.VisualStylePropertyEditor.prototype.get contentElement):
(WebInspector.VisualStylePropertyEditor.prototype.get specialPropertyPlaceholderElement):
(WebInspector.VisualStylePropertyEditor.prototype.parseValue):
(WebInspector.VisualStylePropertyEditor.prototype._valueIsSupportedAdvancedKeyword):
(WebInspector.VisualStylePropertyEditor.prototype._valueIsSupportedAdvancedUnit):
(WebInspector.VisualStylePropertyEditor.prototype._canonicalizedKeywordForKey):
(WebInspector.VisualStylePropertyEditor.prototype._keyForKeyword):
(WebInspector.VisualStylePropertyEditor.prototype._valueDidChange):
(WebInspector.VisualStylePropertyEditor.prototype._replaceShorthandPropertyWithLonghandProperties):
(WebInspector.VisualStylePropertyEditor.prototype._titleElementPrepareForClick):
(WebInspector.VisualStylePropertyEditor.prototype._titleElementMouseOver):
(WebInspector.VisualStylePropertyEditor.prototype._titleElementMouseOut):
(WebInspector.VisualStylePropertyEditor.prototype._titleElementClick):
(WebInspector.VisualStylePropertyEditor.prototype._hasMultipleConflictingValues):
(WebInspector.VisualStylePropertyEditor.prototype._showPropertyInfoPopover):
(WebInspector.VisualStylePropertyEditor.prototype._toggleTabbingOfSelectableElements):

* UserInterface/Views/VisualStyleTabbedPropertiesRow.css: Added.
(.visual-style-tabbed-properties-row ~ :not(.visible)):
(.visual-style-tabbed-properties-row > .visual-style-tabbed-properties-row-container):
(.visual-style-tabbed-properties-row > .visual-style-tabbed-properties-row-container > button):
(.visual-style-tabbed-properties-row > .visual-style-tabbed-properties-row-container > button.selected):
(.visual-style-tabbed-properties-row > .visual-style-tabbed-properties-row-container > button:not(.selected):hover):

* UserInterface/Views/VisualStyleTabbedPropertiesRow.js: Added.
(WebInspector.VisualStyleTabbedPropertiesRow):
(WebInspector.VisualStyleTabbedPropertiesRow.prototype._handleButtonClicked):

Modified Paths

Added Paths

Diff

Modified: trunk/Source/WebInspectorUI/ChangeLog (188483 => 188484)


--- trunk/Source/WebInspectorUI/ChangeLog	2015-08-14 20:05:06 UTC (rev 188483)
+++ trunk/Source/WebInspectorUI/ChangeLog	2015-08-14 20:07:15 UTC (rev 188484)
@@ -1,5 +1,103 @@
 2015-08-14  Devin Rousso  <[email protected]>
 
+        Web Inspector: Add visual editors for CSS properties
+        https://bugs.webkit.org/show_bug.cgi?id=147576
+
+        Added parent class for property editors in the Visual style
+        details panel in the CSS sidebar.
+
+        Reviewed by Timothy Hatcher.
+
+        * UserInterface/Views/VisualStylePropertyCombiner.js: Added.
+        (WebInspector.VisualStylePropertyCombiner):
+        (WebInspector.VisualStylePropertyCombiner.prototype.get style):
+        (WebInspector.VisualStylePropertyCombiner.prototype.get synthesizedValue):
+        (WebInspector.VisualStylePropertyCombiner.prototype.modifyPropertyText):
+        (WebInspector.VisualStylePropertyCombiner.prototype.update):
+        (WebInspector.VisualStylePropertyCombiner.prototype.updateValuesFromText.updateCompatibleEditor):
+        (WebInspector.VisualStylePropertyCombiner.prototype.updateValuesFromText):
+        (WebInspector.VisualStylePropertyCombiner.prototype.propertyMissing):
+        (WebInspector.VisualStylePropertyCombiner.prototype.resetEditorValues):
+        (WebInspector.VisualStylePropertyCombiner.prototype._markEditors):
+        (WebInspector.VisualStylePropertyCombiner.prototype._handlePropertyEditorValueChanged):
+
+        * UserInterface/Views/VisualStylePropertyEditor.css: Added.
+        (.visual-style-property-container):
+        (.visual-style-property-container > .visual-style-property-title):
+        (.visual-style-property-container > .visual-style-property-title > .property-reference-info):
+        (.visual-style-property-container.disabled > .visual-style-property-title > :not(.property-reference-info)):
+        (.visual-style-property-container > .visual-style-property-value-container):
+        (.visual-style-property-container.disabled > .visual-style-property-value-container):
+        (.visual-style-property-container > .visual-style-property-value-container select):
+        (.visual-style-property-container > .visual-style-property-value-container input):
+        (.visual-style-property-container.disabled > .visual-style-property-value-container input):
+        (.visual-style-property-container.layout-reversed > .visual-style-property-title):
+        (.visual-style-property-container > .visual-style-property-value-container > .visual-style-special-property-placeholder):
+        (.visual-style-property-info-popover):
+        (.visual-style-property-info-popover > h3):
+
+        * UserInterface/Views/VisualStylePropertyEditor.js: Added.
+        (WebInspector.VisualStylePropertyEditor.canonicalizeValues):
+        (WebInspector.VisualStylePropertyEditor):
+        (WebInspector.VisualStylePropertyEditor.prototype.get element):
+        (WebInspector.VisualStylePropertyEditor.prototype.get style):
+        (WebInspector.VisualStylePropertyEditor.prototype.get value):
+        (WebInspector.VisualStylePropertyEditor.prototype.set value):
+        (WebInspector.VisualStylePropertyEditor.prototype.get units):
+        (WebInspector.VisualStylePropertyEditor.prototype.set units):
+        (WebInspector.VisualStylePropertyEditor.prototype.get placeholder):
+        (WebInspector.VisualStylePropertyEditor.prototype.set placeholder):
+        (WebInspector.VisualStylePropertyEditor.prototype.get synthesizedValue):
+        (WebInspector.VisualStylePropertyEditor.prototype.set suppressStyleTextUpdate):
+        (WebInspector.VisualStylePropertyEditor.prototype.set masterProperty):
+        (WebInspector.VisualStylePropertyEditor.prototype.get masterProperty):
+        (WebInspector.VisualStylePropertyEditor.prototype.set optionalProperty):
+        (WebInspector.VisualStylePropertyEditor.prototype.get optionalProperty):
+        (WebInspector.VisualStylePropertyEditor.prototype.set colorProperty):
+        (WebInspector.VisualStylePropertyEditor.prototype.get colorProperty):
+        (WebInspector.VisualStylePropertyEditor.prototype.get propertyReferenceName):
+        (WebInspector.VisualStylePropertyEditor.prototype.set propertyReferenceName):
+        (WebInspector.VisualStylePropertyEditor.prototype.set disabled):
+        (WebInspector.VisualStylePropertyEditor.prototype.get disabled):
+        (WebInspector.VisualStylePropertyEditor.prototype.update):
+        (WebInspector.VisualStylePropertyEditor.prototype.updateEditorValues):
+        (WebInspector.VisualStylePropertyEditor.prototype.resetEditorValues):
+        (WebInspector.VisualStylePropertyEditor.prototype.modifyPropertyText):
+        (WebInspector.VisualStylePropertyEditor.prototype.getValuesFromText):
+        (WebInspector.VisualStylePropertyEditor.prototype.propertyMissing):
+        (WebInspector.VisualStylePropertyEditor.prototype.valueIsCompatible):
+        (WebInspector.VisualStylePropertyEditor.prototype.valueIsSupportedKeyword):
+        (WebInspector.VisualStylePropertyEditor.prototype.valueIsSupportedUnit):
+        (WebInspector.VisualStylePropertyEditor.prototype.get contentElement):
+        (WebInspector.VisualStylePropertyEditor.prototype.get specialPropertyPlaceholderElement):
+        (WebInspector.VisualStylePropertyEditor.prototype.parseValue):
+        (WebInspector.VisualStylePropertyEditor.prototype._valueIsSupportedAdvancedKeyword):
+        (WebInspector.VisualStylePropertyEditor.prototype._valueIsSupportedAdvancedUnit):
+        (WebInspector.VisualStylePropertyEditor.prototype._canonicalizedKeywordForKey):
+        (WebInspector.VisualStylePropertyEditor.prototype._keyForKeyword):
+        (WebInspector.VisualStylePropertyEditor.prototype._valueDidChange):
+        (WebInspector.VisualStylePropertyEditor.prototype._replaceShorthandPropertyWithLonghandProperties):
+        (WebInspector.VisualStylePropertyEditor.prototype._titleElementPrepareForClick):
+        (WebInspector.VisualStylePropertyEditor.prototype._titleElementMouseOver):
+        (WebInspector.VisualStylePropertyEditor.prototype._titleElementMouseOut):
+        (WebInspector.VisualStylePropertyEditor.prototype._titleElementClick):
+        (WebInspector.VisualStylePropertyEditor.prototype._hasMultipleConflictingValues):
+        (WebInspector.VisualStylePropertyEditor.prototype._showPropertyInfoPopover):
+        (WebInspector.VisualStylePropertyEditor.prototype._toggleTabbingOfSelectableElements):
+
+        * UserInterface/Views/VisualStyleTabbedPropertiesRow.css: Added.
+        (.visual-style-tabbed-properties-row ~ :not(.visible)):
+        (.visual-style-tabbed-properties-row > .visual-style-tabbed-properties-row-container):
+        (.visual-style-tabbed-properties-row > .visual-style-tabbed-properties-row-container > button):
+        (.visual-style-tabbed-properties-row > .visual-style-tabbed-properties-row-container > button.selected):
+        (.visual-style-tabbed-properties-row > .visual-style-tabbed-properties-row-container > button:not(.selected):hover):
+
+        * UserInterface/Views/VisualStyleTabbedPropertiesRow.js: Added.
+        (WebInspector.VisualStyleTabbedPropertiesRow):
+        (WebInspector.VisualStyleTabbedPropertiesRow.prototype._handleButtonClicked):
+
+2015-08-14  Devin Rousso  <[email protected]>
+
         Web Inspector: Add Visual editors for CSS properties with comma separated values
         https://bugs.webkit.org/show_bug.cgi?id=147578
 

Added: trunk/Source/WebInspectorUI/UserInterface/Views/VisualStylePropertyCombiner.js (0 => 188484)


--- trunk/Source/WebInspectorUI/UserInterface/Views/VisualStylePropertyCombiner.js	                        (rev 0)
+++ trunk/Source/WebInspectorUI/UserInterface/Views/VisualStylePropertyCombiner.js	2015-08-14 20:07:15 UTC (rev 188484)
@@ -0,0 +1,182 @@
+/*
+ * Copyright (C) 2015 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+WebInspector.VisualStylePropertyCombiner = class VisualStylePropertyCombiner extends WebInspector.Object
+{
+    constructor(propertyName, propertyEditors)
+    {
+        super();
+
+        this._style = null;
+        this._propertyName = propertyName;
+        this._propertyMissing = false;
+        this._propertyEditors = propertyEditors || [];
+
+        for (let editor of this._propertyEditors) {
+            editor.addEventListener(WebInspector.VisualStylePropertyEditor.Event.ValueDidChange, this._handlePropertyEditorValueChanged, this);
+            editor.suppressStyleTextUpdate = true;
+        }
+
+        this._textContainsNameRegExp = new RegExp("(?:(?:^|;)\\s*" + this._propertyName + "\\s*:)");
+        this._replacementRegExp = new RegExp("(^|;)(?:\\s*)(" + this._propertyName + ")(.+?(?:;|$))");
+        this._valueRegExp = /([^\s]+\(.+\)|[^\s]+)(?:;?)/g;
+    }
+
+    get style()
+    {
+        return this._style;
+    }
+
+    get synthesizedValue()
+    {
+        let value = "";
+        let _oneEditorHasValue_ = false;
+        for (let editor of this._propertyEditors) {
+            let editorValue = editor.synthesizedValue;
+            if (editorValue && editorValue.length)
+                _oneEditorHasValue_ = true;
+            else if (editor.optionalProperty)
+                continue;
+
+            if (editor.masterProperty && editor.valueIsSupportedKeyword()) {
+                this._markEditors(editor, true);
+                return editorValue;
+            }
+
+            if (editor !== this._propertyEditors[0])
+                value += " ";
+
+            value += editorValue || (editor.colorProperty ? "transparent" : 0);
+        }
+
+        this._markEditors();
+        return value.length && oneEditorHasValue ? value : null;
+    }
+
+    modifyPropertyText(text, value)
+    {
+        let trimmedText = text.trimRight();
+        if (this._textContainsNameRegExp.test(text))
+            text = text.replace(this._replacementRegExp, value !== null ? "$1$2: " + value + ";" : "$1");
+        else if (value !== null) {
+            if (trimmedText.trimLeft().length && !trimmedText.endsWith(";"))
+                text += ";";
+
+            text += this._propertyName + ": " + value + ";";
+        }
+        return text;
+    }
+
+    update(style)
+    {
+        if (style)
+            this._style = style;
+        else if (this._ignoreNextUpdate) {
+            this._ignoreNextUpdate = false;
+            return;
+        }
+
+        if (!this._style || !this._valueRegExp)
+            return;
+
+        let property = this._style.propertyForName(this._propertyName, true);
+        let propertyMissing = !property;
+        if (propertyMissing && this._style.nodeStyles)
+            property = this._style.nodeStyles.computedStyle.propertyForName(this._propertyName);
+
+        if (!property)
+            return;
+
+        this.updateValuesFromText(property.value, propertyMissing);
+        this._propertyMissing = propertyMissing;
+    }
+
+    updateValuesFromText(styleText, propertyMissing)
+    {
+        if (styleText === this.synthesizedValue)
+            return;
+
+        for (let editor of this._propertyEditors)
+            editor[WebInspector.VisualStylePropertyCombiner.EditorUpdatedSymbol] = false;
+
+        function updateCompatibleEditor(value) {
+            for (let editor of this._propertyEditors) {
+                if (value && !editor.valueIsCompatible(value) || editor[WebInspector.VisualStylePropertyCombiner.EditorUpdatedSymbol])
+                    continue;
+
+                if (this._currentValueIsKeyword && editor.disabled)
+                    continue;
+
+                let updatedValues = editor.getValuesFromText(value || "", propertyMissing);
+                editor.updateEditorValues(updatedValues);
+                editor[WebInspector.VisualStylePropertyCombiner.EditorUpdatedSymbol] = true;
+
+                if (value)
+                    return;
+            }
+        }
+
+        let matches = styleText.match(this._valueRegExp);
+        for (let i = 0; i < this._propertyEditors.length; ++i)
+            updateCompatibleEditor.call(this, matches && matches[i]);
+    }
+
+    get propertyMissing()
+    {
+        return this._propertyMissing;
+    }
+
+    resetEditorValues(value)
+    {
+        this._ignoreNextUpdate = false;
+        this.updateValuesFromText(value || "");
+    }
+
+    // Private
+
+    _markEditors(ignoredEditor, disabled)
+    {
+        this._currentValueIsKeyword = disabled || false;
+        for (let editor of this._propertyEditors) {
+            if (ignoredEditor && editor === ignoredEditor)
+                continue;
+
+            editor.disabled = this._currentValueIsKeyword;
+        }
+    }
+
+    _handlePropertyEditorValueChanged()
+    {
+        this._ignoreNextUpdate = true;
+        let value = this.synthesizedValue;
+        if (this._style)
+            this._style.text = this.modifyPropertyText(this._style.text, value);
+
+        this._propertyMissing = !value;
+        this.dispatchEventToListeners(WebInspector.VisualStylePropertyEditor.Event.ValueDidChange);
+    }
+};
+
+WebInspector.VisualStylePropertyCombiner.EditorUpdatedSymbol = Symbol("visual-style-property-combiner-editor-updated");

Added: trunk/Source/WebInspectorUI/UserInterface/Views/VisualStylePropertyEditor.css (0 => 188484)


--- trunk/Source/WebInspectorUI/UserInterface/Views/VisualStylePropertyEditor.css	                        (rev 0)
+++ trunk/Source/WebInspectorUI/UserInterface/Views/VisualStylePropertyEditor.css	2015-08-14 20:07:15 UTC (rev 188484)
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2015 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+.visual-style-property-container {
+    display: flex;
+    width: 100%;
+    min-height: 22px;
+}
+
+.visual-style-property-container > .visual-style-property-title {
+    margin: 4px;
+    text-align: right;
+}
+
+.visual-style-property-container > .visual-style-property-title > .property-reference-info{
+    cursor: help;
+}
+
+.visual-style-property-container.disabled > .visual-style-property-title > :not(.property-reference-info) {
+    opacity: 0.7;
+}
+
+.visual-style-property-container > .visual-style-property-value-container {
+    flex: 1;
+    position: relative;
+}
+
+.visual-style-property-container.disabled > .visual-style-property-value-container {
+    pointer-events: none;
+    opacity: 0.4;
+}
+
+.visual-style-property-container > .visual-style-property-value-container select {
+    width: 100%;
+    margin: 1px 0;
+}
+
+.visual-style-property-container > .visual-style-property-value-container input {
+    width: calc(100% - 1px);
+    margin: 0;
+    outline: none;
+}
+
+.visual-style-property-container.disabled > .visual-style-property-value-container input {
+    pointer-events: none !important;
+}
+
+.visual-style-property-container.layout-reversed > .visual-style-property-title {
+    order: 2;
+    text-align: left;
+}
+
+.visual-style-property-container > .visual-style-property-value-container > .visual-style-special-property-placeholder {
+    position: absolute;
+    top: 2px;
+    left: 1px;
+    width: calc(100% - 20px);
+    line-height: 16px;
+    text-indent: 7px;
+    border-radius: 4px;
+    background-color: white;
+    color: hsl(0, 0%, 50%);
+    pointer-events: none;
+    overflow: hidden;
+    white-space: nowrap;
+    z-index: 1;
+}
+
+.visual-style-property-info-popover {
+    width: 190px;
+    margin: 0 5px 3px;
+    padding: 0;
+}
+
+.visual-style-property-info-popover > h3 {
+    margin: 6px 3px;
+}

Added: trunk/Source/WebInspectorUI/UserInterface/Views/VisualStylePropertyEditor.js (0 => 188484)


--- trunk/Source/WebInspectorUI/UserInterface/Views/VisualStylePropertyEditor.js	                        (rev 0)
+++ trunk/Source/WebInspectorUI/UserInterface/Views/VisualStylePropertyEditor.js	2015-08-14 20:07:15 UTC (rev 188484)
@@ -0,0 +1,525 @@
+/*
+ * Copyright (C) 2015 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+WebInspector.VisualStylePropertyEditor = class VisualStylePropertyEditor extends WebInspector.Object
+{
+    constructor(propertyNames, label, possibleValues, possibleUnits, className, layoutReversed)
+    {
+        super();
+
+        this._propertyInfoList = [];
+        this._style = null;
+
+        function canonicalizeValues(values)
+        {
+            if (!values)
+                return;
+
+            let canonicalizedValues = {};
+            for (let value of values)
+                canonicalizedValues[value.toLowerCase().replace(/\s/g, "-")] = value;
+
+            return canonicalizedValues;
+        }
+
+        this._possibleValues = null;
+        if (possibleValues) {
+            this._possibleValues = {};
+            if (Array.isArray(possibleValues))
+                this._possibleValues.basic = canonicalizeValues(possibleValues);
+            else {
+                this._possibleValues.basic = canonicalizeValues(possibleValues.basic);
+                this._possibleValues.advanced = canonicalizeValues(possibleValues.advanced);
+            } 
+        }
+        this._possibleUnits = null;
+        if (possibleUnits) {
+            this._possibleUnits = {};
+            if (Array.isArray(possibleUnits))
+                this._possibleUnits.basic = possibleUnits;
+            else
+                this._possibleUnits = possibleUnits;
+        }
+
+        this._element = document.createElement("div");
+        this._element.classList.add("visual-style-property-container", className);
+        this._element.classList.toggle("layout-reversed", layoutReversed);
+
+        if (label && label.length) {
+            let titleContainer = document.createElement("div");
+            titleContainer.classList.add("visual-style-property-title");
+
+            this._titleElement = document.createElement("span");
+            this._titleElement.appendChild(document.createTextNode(label));
+            this._titleElement.addEventListener("mouseover", this._titleElementMouseOver.bind(this));
+            this._titleElement.addEventListener("mouseout", this._titleElementMouseOut.bind(this));
+            this._titleElement.addEventListener("click", this._titleElementClick.bind(this));
+            titleContainer.appendChild(this._titleElement);
+
+            this._element.appendChild(titleContainer);
+
+            this._boundTitleElementPrepareForClick = this._titleElementPrepareForClick.bind(this);
+        }
+
+        this._contentElement = document.createElement("div");
+        this._contentElement.classList.add("visual-style-property-value-container");
+
+        this._specialPropertyPlaceholderElement = document.createElement("span");
+        this._specialPropertyPlaceholderElement.classList.add("visual-style-special-property-placeholder");
+        this._specialPropertyPlaceholderElement.hidden = true;
+        this._contentElement.appendChild(this._specialPropertyPlaceholderElement);
+
+        this._element.appendChild(this._contentElement);
+
+        this._updatedValues = {};
+        this._lastValue = null;
+
+        if (typeof propertyNames === "string")
+            propertyNames = [propertyNames];
+        else {
+            this._hasMultipleProperties = true;
+            this._element.classList.add("multiple");
+        }
+
+        for (let name of propertyNames) {
+            this._element.classList.add(name);
+            this._propertyInfoList.push({
+                name,
+                textContainsNameRegExp: new RegExp("(?:(?:^|;)\\s*" + name + "\\s*:)"),
+                replacementRegExp: new RegExp("(^|;)(?:\\s*)(" + name + ")(.+?(?:;|$))")
+            })
+        }
+
+        this._propertyReferenceName = propertyNames[0];
+        this._propertyReferenceText = WebInspector.VisualStyleDetailsPanel.propertyReferenceInfo[this._propertyReferenceName];
+        this._hasPropertyReference = this._propertyReferenceText && !!this._propertyReferenceText.trim().length;
+        this._representedProperty = null;
+    }
+
+    // Public
+
+    get element()
+    {
+        return this._element;
+    }
+
+    get style()
+    {
+        return this._style;
+    }
+
+    get value()
+    {
+        // Implemented by subclass.
+    }
+
+    set value(value)
+    {
+        // Implemented by subclass.
+    }
+
+    get units()
+    {
+        // Implemented by subclass.
+    }
+
+    set units(unit)
+    {
+        // Implemented by subclass.
+    }
+
+    get placeholder()
+    {
+        // Implemented by subclass.
+    }
+
+    set placeholder(text)
+    {
+        // Implemented by subclass.
+    }
+
+    get synthesizedValue()
+    {
+        // Implemented by subclass.
+    }
+
+    set suppressStyleTextUpdate(flag)
+    {
+        this._suppressStyleTextUpdate = flag;
+    }
+
+    set masterProperty(flag)
+    {
+        this._masterProperty = flag;
+    }
+
+    get masterProperty()
+    {
+        return this._masterProperty;
+    }
+
+    set optionalProperty(flag)
+    {
+        this._optionalProperty = flag;
+    }
+
+    get optionalProperty()
+    {
+        return this._optionalProperty;
+    }
+
+    set colorProperty(flag)
+    {
+        this._colorProperty = flag;
+    }
+
+    get colorProperty()
+    {
+        return this._colorProperty;
+    }
+
+    get propertyReferenceName()
+    {
+        return this._propertyReferenceName;
+    }
+
+    set propertyReferenceName(name)
+    {
+        if (!name || !name.length)
+            return;
+
+        this._propertyReferenceName = name;
+    }
+
+    set disabled(flag)
+    {
+        this._disabled = flag;
+        this._element.classList.toggle("disabled", this._disabled);
+        this._toggleTabbingOfSelectableElements(this._disabled);
+    }
+
+    get disabled()
+    {
+        return this._disabled;
+    }
+
+    update(style)
+    {
+        if (style)
+            this._style = style;
+        else if (this._ignoreNextUpdate) {
+            this._ignoreNextUpdate = false;
+            return;
+        }
+
+        if (!this._style)
+            return;
+
+        this._updatedValues = {};
+        let propertyValuesConflict = false;
+        let propertyMissing = false;
+        for (let propertyInfo of this._propertyInfoList) {
+            let property = this._style.propertyForName(propertyInfo.name, true);
+            propertyMissing = !property;
+            if (propertyMissing && this._style.nodeStyles)
+                property = this._style.nodeStyles.computedStyle.propertyForName(propertyInfo.name);
+
+            if (!property)
+                continue;
+
+            if (!propertyMissing && property.anonymous)
+                this._representedProperty = property;
+
+            let newValues = this.getValuesFromText(property.value, propertyMissing);
+            if (this._updatedValues.placeholder && this._updatedValues.placeholder !== newValues.placeholder)
+                propertyValuesConflict = true;
+
+            if (!this._updatedValues.placeholder)
+                this._updatedValues = newValues;
+
+            if (propertyValuesConflict) {
+                this._updatedValues.conflictingValues = true;
+                this._specialPropertyPlaceholderElement.textContent = WebInspector.UIString("(multiple)");
+                break;
+            }
+        }
+
+        if (this._hasMultipleProperties)
+            this._specialPropertyPlaceholderElement.hidden = !propertyValuesConflict;
+
+        this.updateEditorValues(this._updatedValues);
+    }
+
+    updateEditorValues(updatedValues)
+    {
+        this.value = updatedValues.value;
+        this.units = updatedValues.units;
+        this.placeholder = updatedValues.placeholder;
+
+        this._lastValue = this.synthesizedValue;
+        this.disabled = false;
+    }
+
+    resetEditorValues(value)
+    {
+        this._ignoreNextUpdate = false;
+        if (!value || !value.length) {
+            this.value = null;
+            this._specialPropertyPlaceholderElement.hidden = false;
+            return;
+        }
+
+        let updatedValues = this.getValuesFromText(value);
+        this.updateEditorValues(updatedValues);
+    }
+
+    modifyPropertyText(text, value)
+    {
+        let trimmedText = text.trimRight();
+        for (let property of this._propertyInfoList) {
+            if (property.textContainsNameRegExp.test(text))
+                text = text.replace(property.replacementRegExp, value !== null ? "$1$2: " + value + ";" : "$1");
+            else if (value !== null) {
+                if (trimmedText.trimLeft().length && !trimmedText.endsWith(";"))
+                    text += ";";
+
+                text += property.name + ": " + value + ";";
+            }
+        }
+        return text;
+    }
+
+    getValuesFromText(text, propertyMissing)
+    {
+        let match = this.parseValue(text);
+        let placeholder = match ? match[1] : text;
+        let units = match ? match[2] : null;
+        let value = placeholder;
+        if (propertyMissing)
+            value = this.valueIsSupportedKeyword(text) ? text : null;
+
+        return {value, units, placeholder, propertyMissing};
+    }
+
+    get propertyMissing()
+    {
+        return this._updatedValues && this._updatedValues.propertyMissing;
+    }
+
+    valueIsCompatible(value)
+    {
+        if (!value || !value.length)
+            return false;
+
+        return this.valueIsSupportedKeyword(value) || !!this.parseValue(value);
+    }
+
+    valueIsSupportedKeyword(value) {
+        if (!this._possibleValues)
+            return false;
+
+        value = value || this.value;
+        if (Object.keys(this._possibleValues.basic).includes(value))
+            return true;
+
+        return this._valueIsSupportedAdvancedKeyword(value);
+    }
+
+    valueIsSupportedUnit(unit)
+    {
+        if (!this._possibleUnits)
+            return false;
+
+        unit = unit || this.units;
+        if (this._possibleUnits.basic.includes(unit))
+            return true;
+
+        return this._valueIsSupportedAdvancedUnit(unit);
+    }
+
+    // Protected
+
+    get contentElement()
+    {
+        return this._contentElement;
+    }
+
+    get specialPropertyPlaceholderElement()
+    {
+        return this._specialPropertyPlaceholderElement;
+    }
+
+    parseValue(text)
+    {
+        return /^([^;]+)\s*;?$/.exec(text);
+    }
+
+    // Private
+
+    _valueIsSupportedAdvancedKeyword(value)
+    {
+        return this._possibleValues.advanced && Object.keys(this._possibleValues.advanced).includes(value || this.value);
+    }
+
+    _valueIsSupportedAdvancedUnit(unit)
+    {
+        return this._possibleUnits.advanced && this._possibleUnits.advanced.includes(unit || this.units);
+    }
+
+    _canonicalizedKeywordForKey(value)
+    {
+        if (!value || !this._possibleValues)
+            return null;
+
+        return this._possibleValues.basic[value] || (this._possibleValues.advanced && this._possibleValues.advanced[value]) || null;
+    }
+
+    _keyForKeyword(keyword)
+    {
+        if (!keyword || !keyword.length || !this._possibleValues)
+            return null;
+
+        for (let basicKey in this._possibleValues.basic) {
+            if (this._possibleValues.basic[basicKey] === keyword)
+                return basicKey;
+        }
+
+        if (!this._possibleValues.advanced)
+            return null;
+
+        for (let advancedKey in this._possibleValues.advanced) {
+            if (this._possibleValues.advanced[advancedKey] === keyword)
+                return advancedKey;
+        }
+
+        return null;
+    }
+
+    _valueDidChange()
+    {
+        let value = this.synthesizedValue;
+        if (value === this._lastValue)
+            return false;
+
+        if (this._style && !this._suppressStyleTextUpdate) {
+            let newText = this._style.text;
+            newText = this._replaceShorthandPropertyWithLonghandProperties(newText);
+            newText = this.modifyPropertyText(newText, value);
+            this._style.text = newText;
+            if (!newText.length)
+                this._style.update(null, null, this._style.styleSheetTextRange);
+        }
+
+        this._lastValue = value;
+        this._updatedValues.propertyMissing = !value;
+        this._ignoreNextUpdate = true;
+        this._specialPropertyPlaceholderElement.hidden = true;
+
+        this.dispatchEventToListeners(WebInspector.VisualStylePropertyEditor.Event.ValueDidChange);
+        return true;
+    }
+
+    _replaceShorthandPropertyWithLonghandProperties(text)
+    {
+        if (!this._representedProperty)
+            return text;
+
+        let shorthand = this._representedProperty.relatedShorthandProperty;
+        if (!shorthand)
+            return text;
+
+        let longhandText = "";
+        for (let longhandProperty of shorthand.relatedLonghandProperties) {
+            if (longhandProperty.anonymous)
+                longhandText += longhandProperty.synthesizedText;
+        }
+        return longhandText ? text.replace(shorthand.text, longhandText) : text;
+    }
+
+    _titleElementPrepareForClick(event)
+    {
+        this._titleElement.classList.toggle("property-reference-info", event.type === "keydown" && event.altKey);
+    }
+
+    _titleElementMouseOver(event)
+    {
+        if (!this._hasPropertyReference)
+            return;
+
+        this._titleElement.classList.toggle("property-reference-info", event.altKey);
+        document.addEventListener("keydown", this._boundTitleElementPrepareForClick);
+        document.addEventListener("keyup", this._boundTitleElementPrepareForClick);
+    }
+
+    _titleElementMouseOut()
+    {
+        if (!this._hasPropertyReference)
+            return;
+
+        this._titleElement.classList.remove("property-reference-info");
+        document.removeEventListener("keydown", this._boundTitleElementPrepareForClick);
+        document.removeEventListener("keyup", this._boundTitleElementPrepareForClick);
+    }
+
+    _titleElementClick(event)
+    {
+        if (event.altKey)
+            this._showPropertyInfoPopover();
+    }
+
+    _hasMultipleConflictingValues()
+    {
+        return this._hasMultipleProperties && !this._specialPropertyPlaceholderElement.hidden;
+    }
+
+    _showPropertyInfoPopover()
+    {
+        if (!this._hasPropertyReference)
+            return;
+
+        let propertyInfoElement = document.createElement("p");
+        propertyInfoElement.classList.add("visual-style-property-info-popover");
+
+        let propertyInfoTitleElement = document.createElement("h3");
+        propertyInfoTitleElement.appendChild(document.createTextNode(this._propertyReferenceName));
+        propertyInfoElement.appendChild(propertyInfoTitleElement);
+
+        propertyInfoElement.appendChild(document.createTextNode(this._propertyReferenceText));
+
+        let bounds = WebInspector.Rect.rectFromClientRect(this._titleElement.getBoundingClientRect());
+        let popover = new WebInspector.Popover(this);
+        popover.content = propertyInfoElement;
+        popover.present(bounds.pad(2), [WebInspector.RectEdge.MIN_Y]);
+    }
+
+    _toggleTabbingOfSelectableElements(disabled)
+    {
+        // Implemented by subclass.
+    }
+};
+
+WebInspector.VisualStylePropertyEditor.Event = {
+    ValueDidChange: "visual-style-property-editor-value-changed"
+}

Added: trunk/Source/WebInspectorUI/UserInterface/Views/VisualStyleTabbedPropertiesRow.css (0 => 188484)


--- trunk/Source/WebInspectorUI/UserInterface/Views/VisualStyleTabbedPropertiesRow.css	                        (rev 0)
+++ trunk/Source/WebInspectorUI/UserInterface/Views/VisualStyleTabbedPropertiesRow.css	2015-08-14 20:07:15 UTC (rev 188484)
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2015 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+.visual-style-tabbed-properties-row ~ :not(.visible) {
+    visibility: hidden;
+    height: 0;
+}
+
+.visual-style-tabbed-properties-row > .visual-style-tabbed-properties-row-container {
+    margin: 0 auto;
+}
+
+.visual-style-tabbed-properties-row > .visual-style-tabbed-properties-row-container > button {
+    margin: 0 2px 2px;
+    border-radius: 3px;
+    border-width: 0 1px;
+    border-color: transparent;
+    background-color: transparent;
+}
+
+.visual-style-tabbed-properties-row > .visual-style-tabbed-properties-row-container > button.selected {
+    color: white;
+    background-color: hsl(213, 92%, 55%);
+}
+
+.visual-style-tabbed-properties-row > .visual-style-tabbed-properties-row-container > button:not(.selected):hover {
+    color: white;
+    background-color: hsla(213, 92%, 55%, 0.5);
+}

Added: trunk/Source/WebInspectorUI/UserInterface/Views/VisualStyleTabbedPropertiesRow.js (0 => 188484)


--- trunk/Source/WebInspectorUI/UserInterface/Views/VisualStyleTabbedPropertiesRow.js	                        (rev 0)
+++ trunk/Source/WebInspectorUI/UserInterface/Views/VisualStyleTabbedPropertiesRow.js	2015-08-14 20:07:15 UTC (rev 188484)
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2013 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+WebInspector.VisualStyleTabbedPropertiesRow = class VisualStyleTabbedPropertiesRow extends WebInspector.DetailsSectionRow
+{
+    constructor(tabMap)
+    {
+        super();
+
+        this._element.classList.add("visual-style-tabbed-properties-row");
+
+        let containerElement = document.createElement("div");
+        containerElement.classList.add("visual-style-tabbed-properties-row-container");
+
+        this._tabButtons = [];
+        this._tabMap = tabMap;
+        for (let key in this._tabMap) {
+            let button = document.createElement("button");
+            button.id = key;
+            button.textContent = this._tabMap[key].title;
+            button.addEventListener("click", this._handleButtonClicked.bind(this));
+
+            containerElement.appendChild(button);
+            this._tabButtons.push(button);
+        }
+
+        let firstButton = this._tabButtons[0];
+        firstButton.classList.add("selected");
+        this._tabMap[firstButton.id].element.classList.add("visible");
+
+        this._element.appendChild(containerElement);
+    }
+
+    // Private
+
+    _handleButtonClicked(event)
+    {
+        for (let item of this._tabButtons) {
+            let tab = this._tabMap[item.id];
+            let selected = item === event.target;
+            item.classList.toggle("selected", selected);
+            tab.element.classList.toggle("visible", selected);
+            for (let propertyEditor of tab.properties)
+                propertyEditor.update();
+        }
+    }
+};
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