1 files changed, 241 insertions, 0 deletions
diff --git a/blockly/core/input.js b/blockly/core/input.js
new file mode 100644
index 0000000..4b4eb1d
--- /dev/null
+++ b/blockly/core/input.js
@@ -0,0 +1,241 @@
+/**
+ * @license
+ * Visual Blocks Editor
+ *
+ * Copyright 2012 Google Inc.
+ * https://developers.google.com/blockly/
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @fileoverview Object representing an input (value, statement, or dummy).
+ * @author fraser@google.com (Neil Fraser)
+ */
+'use strict';
+
+goog.provide('Blockly.Input');
+
+goog.require('Blockly.Connection');
+goog.require('Blockly.FieldLabel');
+goog.require('goog.asserts');
+
+
+/**
+ * Class for an input with an optional field.
+ * @param {number} type The type of the input.
+ * @param {string} name Language-neutral identifier which may used to find this
+ *     input again.
+ * @param {!Blockly.Block} block The block containing this input.
+ * @param {Blockly.Connection} connection Optional connection for this input.
+ * @constructor
+ */
+Blockly.Input = function(type, name, block, connection) {
+  /** @type {number} */
+  this.type = type;
+  /** @type {string} */
+  this.name = name;
+  /**
+   * @type {!Blockly.Block}
+   * @private
+   */
+  this.sourceBlock_ = block;
+  /** @type {Blockly.Connection} */
+  this.connection = connection;
+  /** @type {!Array.<!Blockly.Field>} */
+  this.fieldRow = [];
+};
+
+/**
+ * Alignment of input's fields (left, right or centre).
+ * @type {number}
+ */
+Blockly.Input.prototype.align = Blockly.ALIGN_LEFT;
+
+/**
+ * Is the input visible?
+ * @type {boolean}
+ * @private
+ */
+Blockly.Input.prototype.visible_ = true;
+
+/**
+ * Add an item to the end of the input's field row.
+ * @param {string|!Blockly.Field} field Something to add as a field.
+ * @param {string=} opt_name Language-neutral identifier which may used to find
+ *     this field again.  Should be unique to the host block.
+ * @return {!Blockly.Input} The input being append to (to allow chaining).
+ */
+Blockly.Input.prototype.appendField = function(field, opt_name) {
+  // Empty string, Null or undefined generates no field, unless field is named.
+  if (!field && !opt_name) {
+    return this;
+  }
+  // Generate a FieldLabel when given a plain text field.
+  if (goog.isString(field)) {
+    field = new Blockly.FieldLabel(/** @type {string} */ (field));
+  }
+  field.setSourceBlock(this.sourceBlock_);
+  if (this.sourceBlock_.rendered) {
+    field.init();
+  }
+  field.name = opt_name;
+
+  if (field.prefixField) {
+    // Add any prefix.
+    this.appendField(field.prefixField);
+  }
+  // Add the field to the field row.
+  this.fieldRow.push(field);
+  if (field.suffixField) {
+    // Add any suffix.
+    this.appendField(field.suffixField);
+  }
+
+  if (this.sourceBlock_.rendered) {
+    this.sourceBlock_.render();
+    // Adding a field will cause the block to change shape.
+    this.sourceBlock_.bumpNeighbours_();
+  }
+  return this;
+};
+
+/**
+ * Add an item to the end of the input's field row.
+ * @param {*} field Something to add as a field.
+ * @param {string=} opt_name Language-neutral identifier which may used to find
+ *     this field again.  Should be unique to the host block.
+ * @return {!Blockly.Input} The input being append to (to allow chaining).
+ * @deprecated December 2013
+ */
+Blockly.Input.prototype.appendTitle = function(field, opt_name) {
+  console.warn('Deprecated call to appendTitle, use appendField instead.');
+  return this.appendField(field, opt_name);
+};
+
+/**
+ * Remove a field from this input.
+ * @param {string} name The name of the field.
+ * @throws {goog.asserts.AssertionError} if the field is not present.
+ */
+Blockly.Input.prototype.removeField = function(name) {
+  for (var i = 0, field; field = this.fieldRow[i]; i++) {
+    if (field.name === name) {
+      field.dispose();
+      this.fieldRow.splice(i, 1);
+      if (this.sourceBlock_.rendered) {
+        this.sourceBlock_.render();
+        // Removing a field will cause the block to change shape.
+        this.sourceBlock_.bumpNeighbours_();
+      }
+      return;
+    }
+  }
+  goog.asserts.fail('Field "%s" not found.', name);
+};
+
+/**
+ * Gets whether this input is visible or not.
+ * @return {boolean} True if visible.
+ */
+Blockly.Input.prototype.isVisible = function() {
+  return this.visible_;
+};
+
+/**
+ * Sets whether this input is visible or not.
+ * Used to collapse/uncollapse a block.
+ * @param {boolean} visible True if visible.
+ * @return {!Array.<!Blockly.Block>} List of blocks to render.
+ */
+Blockly.Input.prototype.setVisible = function(visible) {
+  var renderList = [];
+  if (this.visible_ == visible) {
+    return renderList;
+  }
+  this.visible_ = visible;
+
+  var display = visible ? 'block' : 'none';
+  for (var y = 0, field; field = this.fieldRow[y]; y++) {
+    field.setVisible(visible);
+  }
+  if (this.connection) {
+    // Has a connection.
+    if (visible) {
+      renderList = this.connection.unhideAll();
+    } else {
+      this.connection.hideAll();
+    }
+    var child = this.connection.targetBlock();
+    if (child) {
+      child.getSvgRoot().style.display = display;
+      if (!visible) {
+        child.rendered = false;
+      }
+    }
+  }
+  return renderList;
+};
+
+/**
+ * Change a connection's compatibility.
+ * @param {string|Array.<string>|null} check Compatible value type or
+ *     list of value types.  Null if all types are compatible.
+ * @return {!Blockly.Input} The input being modified (to allow chaining).
+ */
+Blockly.Input.prototype.setCheck = function(check) {
+  if (!this.connection) {
+    throw 'This input does not have a connection.';
+  }
+  this.connection.setCheck(check);
+  return this;
+};
+
+/**
+ * Change the alignment of the connection's field(s).
+ * @param {number} align One of Blockly.ALIGN_LEFT, ALIGN_CENTRE, ALIGN_RIGHT.
+ *   In RTL mode directions are reversed, and ALIGN_RIGHT aligns to the left.
+ * @return {!Blockly.Input} The input being modified (to allow chaining).
+ */
+Blockly.Input.prototype.setAlign = function(align) {
+  this.align = align;
+  if (this.sourceBlock_.rendered) {
+    this.sourceBlock_.render();
+  }
+  return this;
+};
+
+/**
+ * Initialize the fields on this input.
+ */
+Blockly.Input.prototype.init = function() {
+  if (!this.sourceBlock_.workspace.rendered) {
+    return;  // Headless blocks don't need fields initialized.
+  }
+  for (var i = 0; i < this.fieldRow.length; i++) {
+    this.fieldRow[i].init();
+  }
+};
+
+/**
+ * Sever all links to this input.
+ */
+Blockly.Input.prototype.dispose = function() {
+  for (var i = 0, field; field = this.fieldRow[i]; i++) {
+    field.dispose();
+  }
+  if (this.connection) {
+    this.connection.dispose();
+  }
+  this.sourceBlock_ = null;
+};